高中英语真题：2013级高二上学期第二次月考

2013级高二上学期第二次月考
试卷类型：A 时间：100分钟
第I卷
第一部分：听力（略）
第二部分：阅读理解（共两节，满分40分）
（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A、B、C、D）中选出最佳选项，并在答题卡上将该项涂黑。

A
Bill Javis took over our village news-
agency at a time of life when most of us only want to relax. He just thought he would like something but not too much to do, and the news-agency was ready-
made. The business produced little enough for him, but Bill w as a man who only wanted the simplicity and order and regula rity of the job. He had been a long-
serving sailor, and all his life had done everything by the clock .
Every day he opened his shop at six a.m. to catch the early trade; the papers arrived on his door-
step before that. Many of Bill’s customers were city workers, a nd the shop was convenient for the station. Business was taili ng off by 10 o’clock, so at eleven sharp Bill closed for lunch. It was hard luck on anybody who wanted a paper or magazine i n
the afternoon, for most likely Bill would be down on the river b ank, fishing, and his nearest competitor was five kilometers a way. Sometime in the afternoon, the evening paper landed on the doormat, and at 4 o’clock Bill reopened. The evening rus h lasted till seven, and it was worthwhile.
He lived in a flat above the shop, alone. Except in the very bad weather, you always knew where to find him in the aftern oon, as I have said. Once, on a sunny afternoon, I walked ho me along the river bank from a shopping trip to the village. By my watch it was three minutes past four, so I was astonished t o see Bill sitting there on his little chair with a line in the water. He had had no luck, I could see, but he was making no effort to move.
“What’s wrong, Bill?” I called out from the path.
For answer, he put a hand in his jacket and took out a big, golden object. For a moment I had no idea what it could be, a nd then it suddenly went off with a noise like a fire engine. Sto pping the bell, Bill held the thing up and called back, “Ten to f our, you see, and this is dead right.”
I had never known anyone carrying a brass alarm clock round with him before.
1. Bill Javis became a news-agent when ________.
A. he needed the money.
B. he decided to tak e things easy
C. he was quite an old man
D. he gave up clock -repairing
2. Bill opened the shop so early in the day because ________.
A. he liked to do as much as possible before he went to work
B. the shop had to be open when the morning papers came
C. he was never sure of time
D. it was then that he did a lot of business
3. On that sunny afternoon, the writer was surprised when he saw Bill because _______.
A. he thought it was late for Bill to be still fishing
B. he thought Bill was ill, since he was not moving at all
C. Bill had not caught anything, and that seemed strange
D. Bill stayed in his flat
4. what’s the meaning of the underlined phrase in paragraph 2?
A. become noisy
B. become less
C. become stronger
D. become busy
B
Genetically modified (转基
因 ) foods have become a focus point of agriculture throughou t the news today. This has an effect on many different aspects of the agriculture world. From the seed dealer, to the farmer t hat buys the seed, to the workers that the farmer sells to; all a re affected by the new technologies that are involved in this p art of production agriculture.
Genetically modified foods have come under heavy fire lately. There are some countries that are against buying these types of foods. They are tested for safety by the best scientific expe rts in Europe, the US and the rest of the world. They are not f or sale until they have gone through this complete safety proc ess. Since they are a new product, and any slight problem wit h them could affect a whole country, these tests are very nece ssary.
These safety tests are carried out because of the new rules th at were made with the Novel Foods Regulation. Begun in May of 1997, the Novel Foods Regulation set up an EU-wide pre-market system for all novel foods. A n
ovel food is described as one that has not been eaten by EU consumers widely in the past. By setting up this program the
EU hopes to keep its consumers safe from any possible side effects of any new food products.
There are a variety of ways in which genetic modification has helped food producers. They can improve the nutritional (营养的) value or the storage conditions of the food. Today there ar e only two genetically modified foods that have been allowed f or use, these are GM soybean and GM maize.
Despite any safety checks, many people are still cautious abo ut eating genetically modified foods. By providing these peopl e with the necessary information, we can allow them to make decisions about these foods.
5. What do we know about the novel food?
A. It’s very popular in EU.
B. It’s bad for people’s health.
C. It’s a new kind of food.
D. Its story has been published.
6. Genetically foods are allowed to be sold if they are .
A. tested for safety
B. of high quality
C. more nutritional
D. grown in Europe
7. From paragraph 2, we can learn that genetically modified fo ods .
A. do no harm to people
B. have caused some problems
C. are well received after being tested
D. are criticized and attacked by many people
8. What’s the writer’s attitude towards genetically modified foo ds?
A. We should warn people that they are too dangerous to be eaten.
B. We should give people information about them so that they can decide whether to buy them
C. We should encourage people to eat them because they a re more nutritional.
D. We should tell people that they are trying to fool the farmer s.
C
In the last few years the popularity of eBooks has exploded. T he advantages are clear: You can carry as many books with y ou as you want. You can simply download even 7 books you li ke
and instantly start reading instead of having to wait for the bo ok to arrive by mail.
However, one thing hadn't changed. If you
wanted to rent a book you were still forced to use hardcopy b
ooks. Until now that is Amazon. com recently announced the start of a new program where you can rent eBooks.
Where to rent eBooks?
As mentioned before, Amazon. com is the first and currently t he only retailer (零售
商) that has a program in place for renting eBooks. Luckily, A mazon is the largest online retailer in the world and their eBoo k assortment (分
类) is massive. They are also the producer of the Kindle, the most popular eReader, which means you can be sure that the eBooks you rent will work.
You can currently only rent eTextbooks. But this is likely to ch ange as soon as the word gets out that you can save money by renting eBooks.
Why rent eBooks at Amazon?
● Save money: Save up t0 80% of the normal price
of the eBook.
●Decide how long you rent: From 30 days t0 360 days, you d ecide how long you want it. You can extend the time by as litt le as a day. Or simply buy the eBook if you want to keep it aft er all.
●Use any device: If you rent an eBook from Amazon, you can
read it on your PC, Mac, iPad, iPhone, Android device, Wind ows Phone 7. Blackberry. or Kindle. .
●Keep your notes: Do you like to keep annotations (注
释) and highlights in your eBooks? Don't worry. You can alwa ys revisit your notes and highlights through Amazon. com.
How to rent eBooks?
Simply search for the eBook you want to rent on Amazon. co m and select the "Rent eBooks" option. After that, a new page will open where you can s
elect how long you’d like to rent the eBook. You can read eBo oks for a period of 30 to 360 days.
You decide how long you need the eBook. If you later find o ut you need it for longer. you can simply extend the time. Or b uy it for the normal price whenever you want.
Once you've chosen the time you want to rent the eBook, yo u simply go to checkout. Or you can use the "Rent now" butto n.
According to the passage, _________
A. eBooks will be changed into other types by Amazon. co m
B. eBooks will re
place hardcover hooks in the next few years
C. readers get a discount of at least 20% of the normal price
D. readers are able to rent eBooks only at Amazon. com no w
10. To rent an eBook online, which of the following goes last?
A. open a new page
B. select the "Rent eBooks" o ption
C. choose a rental date
D. press "Rent now" button
11. The main purpose of the passage is to __________.
A. inform and explain
B. discuss and assess
C. compare and evaluate D describe and argue
D
US researchers have found traces of an ancient lake on Mars recently, increasing hopes of discovering evidence that billion s of years ago the Red planet hosted life.
The lake, which dates back some 3.4 billion years, appears to have covered as much as 80 square miles and was up to 1,5 00 feet deep, said the team from the University of Colorado. "This is the first clear evidence of shorelines on the surface of Mars," said Boulder's research associate, Gaetano Di Achille, in a study published in the latest edition of Geophysical Rese arch Letters.
"The identification of the shorelines and accompanying geolo
gical evidence allows us to calculate the size and volume of th e lake, which appears to have formed about 3.4 billion years a go."
Analysis of the images has shown the water carved out the ca nyon (溪
谷) in which it was found, which then opened out into a valley depositing (使淤积) sediment (沉积) which formed a delta (三角洲).
"Finding shorelines is a great discovery to us," said assistant professor Brian Hynek, adding it showed the lake existed at a time when Mars was thought to have been cold and dry. Scientists believe the oldest surfaces on Mars formed during t he wet and warm era known as the Noachan epoch, about 4.
1 billion to 3.7 billion years ago.
The newly discovered lake is believed to date from the Hespe rian era and postdates the end of the warm and wet period on Mars by 300 million years, according to the study.
Scientists believe deltas next to the lake may well hold secret s about past life on Mars as such places on Earth have beco me the natural deposits of organic carbon and other markers of life.
12. The size of the lake found on Mars is ______.
A. 80 square miles
B. 1,500 squar e miles
C. 3.4 billion square miles
D. 300 million sq uare miles
13. When the lake existed, the weather on Mars was ____.
A. hot and wet
B. wet and warm
C. cold and dry
D. cold and wet
14. Why do scientists think deltas near the lake may hold secr ets about past life on Mars?
A. Because similar places on Earth have become natural dep osits of markers of life.
B. Because someone has put secrets about past life on Mars there.
C. Because past life has been found in other deltas on Mars.
D. Because some people are said to have already seen life m arks there.
15. Which of the following statements is NOT true according t o the passage?
A. The Noachan epoch was a wet and warm era.
B. The lake might have existed 3.4 billion years.
C. The discovery can’t fully prove that the Mars once hosted li fe.
D. The lake traces prove that there exists life on Mars now.
第二节（共5小题；每小题2分，共10分）
根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。

选项中有两项为多余选项。

Writing A Letter To Your Future Self
Just imagine writing a letter to your future self 5 years from no w, then opening it at that exact moment to see how much of it has come true. _____16______
As you read the letter in the future, you can assess how many things agree with your expectations in the past. __17_______ Often times, the goals we set and our goal achievement proce ss are affected by a lot of changes along the way. The letter l ets you recognize how your current idea differs from the past. In addition to that, at the very moment you are writing the lette r, your thoughts are stored right there in those words. When y ou open the letter in the future, you as your future self gets to compare how you used to be in the past with how you are no w. ___18_____. It’s very interesting to do so.
Take out a pen and paper right now and start writing your lett er to your future self. Set a time period to write to. ____19____ Then start writing. Think about the type of person you will be , your place in life, what you will have realized then, and so on
.
__20______ Put it in a safe space where no one can find it. W hen you open this sometime in the near future, you might gain additional insights(了
解) about yourself and your journey in the past few years. And you can think about why that’s the case.
It is a useful tool to be used in goal achievement.
Imagine how you will be like during that time period.
If you haven’t, join me in writing a letter to yourself.
This lets you see how much things have changed since then. At the end of the letter, write the date to open it on the cover. It wasn’t until we moved into our new house that I found it aga in.
第三部分：英语知识运用（共两节，满分45）
第一节：完形填空（共20小题；每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

It was still a long way, especially when a wind was blowing in. Trint reached for his jacket and 21 when he saw the box on the passenger seat. His mother had been 22 him spending Christmas on the road 23 and had given him a box filled wit
h 24 . His mom still 25 him like a kid, though he was a driv er now. He reached into the stocking and 26 a toy tractor th at looked a lot like his truck. He wondered how many stores hi s mother had to go before she found such a close match. 27 filled his eyes.
He climbed out of his cab (驾驶
室) and ran into the all night café, 28 which many truckers were eating and talking. And a family of three were huddled (挤在一
起) in a corner, tired and 29 . Trint 30 the boy. No kid shoul d have to spend Christmas Eve in a truck stop.
Trint missed his family. His mom raised four kids by herself, 3 1 no matter. how 32 life was, she’d always made sure they had a good Christmas. Then he 33 his box in the truck. He l ooked at the kid again and knew what he had to do. He forced himself into the 34 outside to open his truck. He took the 3 5 out of the cab and hurried back to the warmth of the café. He walked to the family. “I think 36 left this for you,” Trint sai d and handed the red stocking to the boy. “T ell Santa… well, t ell him 37 , ” the boy’s father said and shook Trint’s hand lo ng and hard. The mother smiled gratefully. The boy 38 reac hed out and caught the stocking and dug inside.
Trint felt good. He had a job he loved, clear weather and mile
s of open road ahead. He wasn’t 39 any
more, or lonely. He loved this life and he wouldn’t 40 a thin g.
21. A. continued B. moved C. left
D. stopped
22. A. worried about
B. excited at
C. satisfied with
D. disappointed at
23. A. backward B. alone C. together
D. ahead
24. A. flower B. cake C. present
D. chocolate
25. A. blamed B. treated C. thought
D. respected
26. A. put back B. turned over
C. brought out
D. sold out
27. A. Tears B. Water C. Blood
D. Sweat
28. A. around B. on C. by
D. inside
29. A. excited B. unhappy
C. enthusiastic
D. pleased
30. A. felt proud of B. got tired of
C. felt sorry for D .became interested in
31. A. for B. so C. though
D. but
32. A. hard B. unfair C. hopeless
D. boring
33. A. threw away B. sent back C. thought of
D. put down
34. A. cold B. warmth C. snow
D. rain
35. A. toy tractor B. jacket C. bag
D. stocking
36. A. God B. Santa Claus C. my mother
D. someone kind
37. A. yes B. no C. sorry
D. thanks
38. A. sadly B. weakly C. eagerly
D. seriously
39. A. surprised B. tired C. relaxed
D. confused
40. A. improve B. miss C. throw
D. change
第II 卷
第二节：语法填空（共10题，每小题1.5分，满分15分）
阅读下面短文，按照句子结构的语法和上下文连贯的要求，在空格处填入一个适当词或使用括号中词语的适当形式填空，并将答案填写在答题卡标号为41---50的相应位置上。

Online shopping is coming into fashion in most cities, where p eople are able to make full use of the rapidly-
developed internet technology. Nowadays, can we find a pers on 41 has not experienced online shopping? Definitely no t.
Online shopping 42 (welcome) by most people due to variou s reasons. From the perspective of consumer, it can save so me time for people who don’t have much spare time. Just clic k the mouse, they can get 43 they want while staying at h ome. For the retailers, it can cut some costs for those who do n’t have much circulating funds. 44 (compare) with the traditi onal trade mode, they don’t have to spend money in renting a house. 45 , there are still some disadvantages in online sh opping. First, a face-to-
face deal makes online shopping less 46 (rely) and trustwo rthy. Second, people will lose 47 fun of bargain.
48 is undeniable that shopping on the internet has become a n irresistible trend in modern society. It’s of great urgency that
we need to make the relative laws 49___ the rapid growth of online shopping. Only in this way can we enjoy the pleasur e and 50 (convenient) of online shopping without the conce rn of being cheated.
第四部分：写作（共两节，满分35分）
第一节：短文改错（共10小题；每小题1分，满分10分）假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。

文中有10处语言错误。

每句中至多有两处错误。

请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（/）划掉。

修改：在错的词下划一横线，并在该下面写出修改后的词。

注意：
1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。

John, a heavy smoker, once feel bad-
tempered. His hands started shaking and he coughed a lot, s o he turned to his doctor for help. “Quit smoking,” the doctor a dvised. Find the advice sensible from several points, such as money, healthy, and cleanliness, John decided to give up sm oking. However, for several hour without a cigarette, John wa
s nervous and had a difficulty in concentrating, inability to slee p, what made him more hungry for a cigarette. He said to him self, “One more, I will quit it tomorrow. Tomorrow will be a suit able day of me to break away from the bad habit…” Then he picked up a cigarette which made her relaxed. Again and agai n John made up his mind to do it “tomorrow”. Today John is st ill addicted for smoking.
第二节：书面表达（满分25分）
假如你是李华，你的英国笔友Bill 来信询问你家乡是否有雾霾（smog）、情况如何。

请按下面提示写一封电子邮件:
感谢他的关心；
简要介绍本地雾霾情况及给人们生活带来的危害；
人们已经认识到雾霾天气的危害，正采取各种措施减少其发生。

注意：1.字数100左右；
2.不要逐字翻译，可适当增加细节以使行文连贯；
3.开头结尾已经给出，不计入总数。

Dear Bill:
I’m glad to receive your letter. Thank you for your caring fo r the weather and my health.
______________________________________________________ _________
______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________
______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _________________________________
Yours Sincerely,
Li Hua
2013级高二上学期第二次月考
试卷类型：A 时间：100分钟
第I卷
第一部分：听力（略）
第二部分：阅读理解（共两节，满分40分）
（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A、B、C、D）中选出最佳选项，并在答题卡上将该项涂黑。

A
Bill Javis took over our village news-
agency at a time of life when most of us only want to relax. He just thought he would like som ething but not too much to do, and the news-agency was ready-
made. The business produced little enough for him, but Bill was a man who only wanted the simplicity and order and regularity of the job. He had been a long-
serving sailor, and all his life had done everything by the clock.
Every day he opened his shop at six a.m. to catch the early trade; the papers arrived on hi s door-
step before that. Many of Bill’s customers were city workers, and the shop was convenient fo r the station. Business was tailing off by 10 o’clock, so at eleven sharp Bill closed for lunch. It was hard luck on anybody who wanted a paper or magazine in
the afternoon, for most likely Bill would be down on the river bank, fishing, and his nearest co mpetitor was five kilometers away. Sometime in the afternoon, the evening paper landed on t he doormat, and at 4 o’clock Bill reopened. The evening rush lasted till seven, and it was wor thwhile.
He lived in a flat above the shop, alone. Except in the very bad weather, you always knew where to find him in the afternoon, as I have said. Once, on a sunny afternoon, I walked hom e along the river bank from a shopping trip to the village. By my watch it was three minutes p ast four, so I was astonished to see Bill sitting there on his little chair with a line in the water. He had had no luck, I could see, but he was making no effort to move.
“What’s wrong, Bill?” I called out from the path.
For answer, he put a hand in his jacket and took out a big, golden object. For a moment I h ad no idea what it could be, and then it suddenly went off with a noise like a fire engine. Stop ping the bell, Bill held the thing up and called back, “Ten to four, you see, and this is dead rig ht.”
I had never known anyone carrying a brass alarm clock round with him before.
1. Bill Javis became a news-agent when ________.
A. he needed the money.
B. he decided to take things easy
C. he was quite an old man
D. he gave up clock-repairing
2. Bill opened the shop so early in the day because ________.
A. he liked to do as much as possible before he went to work
B. the shop had to be open when the morning papers came
C. he was never sure of time
D. it was then that he did a lot of business
3. On that sunny afternoon, the writer was surprised when he saw Bill because _______.
A. he thought it was late for Bill to be still fishing
B. he thought Bill was ill, since he was not moving at all
C. Bill had not caught anything, and that seemed strange
D. Bill stayed in his flat
4. what’s the meaning of the underlined phrase in paragraph 2?
A. become noisy
B. become less
C. become stronger
D. become busy
B
Genetically modified (转基
因 ) foods have become a focus point of agriculture throughout the news today. This has an effect on many different aspects of the agriculture world. From the seed dealer, to the farmer that buys the seed, to the workers that the farmer sells to; all are affected by the new technol ogies that are involved in this part of production agriculture.
Genetically modified foods have come under heavy fire lately. There are some countries that are against buying these types of foods. They are tested for safety by the best scientific expe rts in Europe, the US and the rest of the world. They are not for sale until they have gone thr ough this complete safety process. Since they are a new product, and any slight problem wit h them could affect a whole country, these tests are very necessary.
These safety tests are carried out because of the new rules that were made with the Novel F oods Regulation. Begun in May of 1997, the Novel Foods Regulation set up an EU-wide pre-market system for all novel foods. A n
ovel food is described as one that has not been eaten by EU consumers widely in the past. B y setting up this program the EU hopes to keep its consumers safe from any possible side eff ects of any new food products.
There are a variety of ways in which genetic modification has helped food producers. They c an improve the nutritional (营养
的) value or the storage conditions of the food. Today there are only two genetically modified foods that have been allowed for use, these are GM soybean and GM maize.
Despite any safety checks, many people are still cautious about eating genetically modified f oods. By providing these people with the necessary information, we can allow them to make
decisions about these foods.
5. What do we know about the novel food?
A. It’s very popular in EU.
B. It’s bad for people’s health.
C. It’s a new kind of food.
D. Its story has been published.
6. Genetically foods are allowed to be sold if they are .
A. tested for safety
B. of high quality
C. more nutritional
D. grown in Europe
7. From paragraph 2, we can learn that genetically modified foods .
A. do no harm to people
B. have caused some problems
C. are well received after being tested
D. are criticized and attacked by many people
8. W hat’s the writer’s attitude towards genetically modified foods?
A. We should warn people that they are too dangerous to be eaten.
B. We should give people information about them so that they can decide whether to buy the m
C. We should encourage people to eat them because they are more nutritional.
D. We should tell people that they are trying to fool the farmers.
C
In the last few years the popularity of eBooks has exploded. The advantages are clear: You c an carry as many books with you as you want. You can simply download even 7 books you li ke and instantly start reading instead of having to wait for the book to arrive by mail. However, one thing hadn't changed. If you
wanted to rent a book you were still forced to use hardcopy books. Until now that is Amazo n. com recently announced the start of a new program where you can rent eBooks.
Where to rent eBooks?
As mentioned before, Amazon. com is the first and currently the only retailer (零售
商) that has a program in place for renting eBooks. Luckily, Amazon is the largest online retai ler in the world and their eBook assortment (分
类) is massive. They are also the producer of the Kindle, the most popular eReader, which m
eans you can be sure that the eBooks you rent will work.
You can currently only rent eTextbooks. But this is likely to change as soon as the word gets out that you can save money by renting eBooks.
Why rent eBooks at Amazon?
● Save money: Save up t0 80% of the normal price of the eBook.
●Decide how long you rent: From 30 days t0 360 days, you decide how long you want it. Yo u can extend the time by as little as a day. Or simply buy the eBook if you want to keep it afte r all.
●Use any device: If you rent an eBook from Amazon, you can read it on your PC, Mac, iPad, iPhone, Android device, Windows Phone 7. Blackberry. or Kindle. .
●Keep your notes: Do you like to keep annotations (注
释) and highlights in your eBooks? Don't worry. You can always revisit your notes and highli ghts through Amazon. com.
How to rent eBooks?
Simply search for the eBook you want to rent on Amazon. com and select the "Rent eBooks" option. After that, a new page will open where you can s
elect how long you’d like to rent the eBook. You can read eBooks for a period of 30 to 360 da ys.
You decide how long you need the eBook. If you later find out you need it for longer. you ca n simply extend the time. Or buy it for the normal price whenever you want.
Once you've chosen the time you want to rent the eBook, you simply go to checkout. Or you can use the "Rent now" button.
According to the passage, _________
A. eBooks will be changed into other types by Amazon. com
B. eBooks will replace hardcover hooks in the next few years
C. readers get a discount of at least 20% of the normal price
D. readers are able to rent eBooks only at Amazon. com now
10. To rent an eBook online, which of the following goes last?
A. open a new page
B. select the "Rent eBooks" option
C. choose a rental date
D. press "Rent now" button
11. The main purpose of the passage is to __________.
A. inform and explain
B. discuss and assess
C. compare and evaluate D describe and argue
D
US researchers have found traces of an ancient lake on Mars recently, increasing hopes of d iscovering evidence that billions of years ago the Red planet hosted life.
The lake, which dates back some 3.4 billion years, appears to have covered as much as 80 s quare miles and was up to 1,500 feet deep, said the team from the University of Colorado. "This is the first clear evidence of shorelines on the surface of Mars," said Boulder's research associate, Gaetano Di Achille, in a study published in the latest edition of Geophysical Rese arch Letters.
"The identification of the shorelines and accompanying geological evidence allows us to calc ulate the size and volume of the lake, which appears to have formed about 3.4 billion years a go."
Analysis of the images has shown the water carved out the canyon (溪
谷) in which it was found, which then opened out into a valley depositing (使淤
积) sediment (沉积) which formed a delta (三角洲).
"Finding shorelines is a great discovery to us," said assistant professor Brian Hynek, adding i t showed the lake existed at a time when Mars was thought to have been cold and dry. Scientists believe the oldest surfaces on Mars formed during the wet and warm era known as the Noachan epoch, about 4.1 billion to 3.7 billion years ago.
The newly discovered lake is believed to date from the Hesperian era and postdates the end of the warm and wet period on Mars by 300 million years, according to the study.
Scientists believe deltas next to the lake may well hold secrets about past life on Mars as suc h places on Earth have become the natural deposits of organic carbon and other markers of l ife.
12. The size of the lake found on Mars is ______.
A. 80 square miles
B. 1,500 square miles
C. 3.4 billion square miles
D. 300 million square miles
13. When the lake existed, the weather on Mars was ____.
A. hot and wet
B. wet and warm
C. cold and dry
D. cold and wet
14. Why do scientists think deltas near the lake may hold secrets about past life on Mars?。