2019河北衡水中学全国高三联考试题及答案详解

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河北衡水中学高2019届全国高三统一联考文数试题及答案

河北衡水中学高2019届全国高三统一联考文数试题及答案

( )
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2
=
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π 2 π 2 π 或A = . 若 A= , 则 a >b, 所以 a> c, 3 3 3
3 , 2
^ ^ a=ybx=7 0-9. 2ˑ2. 5=4 7. 因此 , 所求线性回归方程为^ =9 . 2 x+4 7. y
7 4 6-4ˑ7 0ˑ2. 5 所以^ b= =9. 2, 2 3 0-4ˑ2. 5
) , , 又 a= ( 所 以 5+k( k a㊃ b=0. -2, 1 b= ( 3, 2) -6+ ) 解得 k= 2 =0, 5 . 4 ʌ 解 析ɔ 不 同 年 龄 段 的 人 对 移 动 支 付 的 熟
2分
3 因为在 әA 所以 s i nA . B C 中s i nA ʂ0, 2
分层抽样 1 4. 知程度不同 , 因此应该按照年龄进行分层抽样 . 解析 ɔ 所 求 目 标 函 数 的 值 可 转 化 为 可 行 域 ( 包括 1 5. 5 ʌ ) 到 直 线l: 且最大 A( 2, 4 3 x +4 y +3=0 的 距 离 最 大 , | 3ˑ2+4ˑ4+3 | 值为 =5. 5 边界 ) 上的点到直线l: 显然点 3 x +4 y +3=0 的 距 离 ,

河北省衡水中学2019届高三下学期大联考卷Ⅰ文数Ⅰ答案

河北省衡水中学2019届高三下学期大联考卷Ⅰ文数Ⅰ答案





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…………………………………………………… 12分
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2,而ac
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2019 年 全 国 高 三 统 一 联 合 考 试
·文科数学·
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( ) 因为f

2019届河北衡水中学全国高三大联考(全国卷)理科综合化学试卷【含答案及解析】

2019届河北衡水中学全国高三大联考(全国卷)理科综合化学试卷【含答案及解析】

Ga 原子的配位数为 ________ 。Ga Ge As、Se 四种基态原子的第一电离能由大到小的
顺序为 __________ 。
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为 ______ ,H 3 AsO 4 的酸性强于 H 3 A sO 3 的原因为 __________________________。
vL 恒容 密闭 容 器中 充入 lmo1 CH 3 O H (g) ,发生反应 i ,图 l 中 能正确表示 CH 3 O H (g) 的平
衡转化率(a )随温度(T)变化关系的曲线为 ______________________________________________ (填“ A”或 “ B”),理由 为 ____________ , T 1 C 时,体系的平衡压强与起始压
4. 有机物 M、N Q 的转化关系为 列说
法正确的是 A. M 的名称为异丁烷 B. N 的同分异构体有 7 种(不考虑立体异构,不包括本身) C. Q 的所有碳原子一定共面 D. M 、N、Q 均能使酸性 KMn O 4 溶液褪色
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河北省衡水中学2019届高三下学期大联考卷Ⅱ数学(理)试题答案

河北省衡水中学2019届高三下学期大联考卷Ⅱ数学(理)试题答案

D;当x>0

,f(x)=2x
x3 +2-x
>
sin2θ,所 以
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=1-sin2θ.故 选
C.
0,排

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f
(4)=
24
43 +2-4
26 > 2×24
=2,f (8)=
83 28 +2-8
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=2,得 f(4)>f(8),排 除
C.故

A.
12 6+12=
2 3
,所

p=4.故

C.
7.D
【解
析】
由题意得A→O=
1 3
(A→B+A→C)=
1 3
(-2B→A +
连接 MC,显然 NC⊥MC.令 正 方 体 的 棱 长 为 2,PM = x,x∈[0,2],则 MC= x2+1,又CN=1,所以tanθ=
x2+1,所以tanθ∈[1,5].故选 B.
当n≥2

,an
2019 年 全 国 高 三 统 一 联 合 考 试
·理科数学·
参考答案及解析
2019 年 全 国 高 三 统 一 联 合 考 试 · 理 科 数 学
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2019河北衡水中学全国高三联考试题及答案详解

2019河北衡水中学全国高三联考试题及答案详解

姓名______________________ 准考证号_______________________绝密★启用前2019年全国高三统一联合考试英语本试卷满分150分。

考试用时120分钟。

注意事项1.答题前,考生务必将自己的姓名、准考证号填写在答题卡上相应的位置。

2. 全部答案在答题卡上完成,答在本试题上无效。

3. 回答选择题时,选出每小题客案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,在选涂其他答案标。

回答非选择题时,将答案用0.5mm黑色笔迹签字笔写在答题卡上。

4. 考试结束后,将本试卷和答题卡一并交回。

第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上,录音内容结束后,你将有两分钟时间将试卷上的答案转涂到答题卡上。

第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话,每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后,你都有10秒钟的时间回答有关小题和阅读下一小题,每段对话仅读一遍。

例How much is the shirt?A. £19.15.B. £ 9.18C. £ 9.15答案是C.1. What is the woman looing for?A. Her purse.B. Her train ticet.C. Her glasses.2. How did the women go to school today?A. By bus.B. By bie.C. On foot.3. When will the speaers probably meet?A. At 930.B. At 945.C. At 1000.4. What does the woman thin of the talent show?A. Interesting.B. Eciting.C. Boring.5. What's the probable relationship between the speaers?A. Classmates.B. Neighbors.C. Teacher and student第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。

专题02 相互作用(测)(解析版)

专题02 相互作用(测)(解析版)

专题测试【满分:100分 时间:90分钟】一、选择题(本题共包括15小题,每小题4分,共60分)1.(河北衡水中学2019届高三调研)如图所示,用完全相同的轻弹簧A 、B 、C 将两个相同的小球连接并悬挂,小球处于静止状态,弹簧A 与竖直方向的夹角为30°,弹簧C 水平,则弹簧A 、C 的伸长量之比为 ( )A .3:4B .4:3C .1:2D .2:1【答案】D【解析】将两小球看做一个整体分析,可知整体受到重力、轻弹簧A 、C 的拉力共3个力的作用而处于平衡状态,将轻弹簧A 的拉力沿竖直方向和水平方向分解可知水平方向上满足sin 30Ax A C F F F =︒=,故:2:1A C F F =,据题意可知三个弹簧的劲度系数相同,由胡克定律F kx =可知弹簧A 、C 的伸长量之比为2:1,故D 项正确,ABC 三项错误。

2.(辽宁省沈阳市东北育才学校2019届高三模拟)如图所示,倾角为θ的斜面体c 置于水平地面上,物块b 置于斜面上,通过跨过光滑定滑轮的细绳与小盒a 连接,连接b 的一段细绳与斜面平行,连接a 的一段细绳竖直,a 连接在竖直固定在地面的弹簧上。

现向盒内缓慢加入适量砂粒,a 、b 、c 始终处于静止状态。

下列判断正确的是( )A .c 对b 的摩擦力可能减小B .地面对c 的支持力可能增大C .地面对c 的摩擦力可能不变D .弹簧的弹力可能增大【答案】A【解析】盒子a 受重力、拉力和弹簧的支持力而平衡,随着沙子质量的增加;由于不知道b 的重力沿着斜面方向的分力与细线拉力的大小关系,故不能确定静摩擦力的方向,静摩擦力可能增加、可能减小,有可能先减小后增大,故A 正确;对a 分析可知,a 处于静止状态,加入适量砂粒后重力变大,弹簧弹力不变,绳子的张力变大;对b 与c 整体分析,受重力、支持力、拉力和向左的静摩擦力,故地面对c 的支持力一定减小,摩擦力一定变大,故BCD 错误。

河北衡水中学2019届高三摸底联考(全国卷)英语试题英语答案

河北衡水中学2019届高三摸底联考(全国卷)英语试题英语答案

河北衡水中学2019届高三摸底联考(全国卷)英语学科答案、评分细则、切题方案第一部分:答案第一部分听力1-5 AACAA 6-10 BBCAB 11-15 BAACB 1s6-20 ACACB第二部分阅读理解(共两节,满分40分)第一节(共15小题:每小题2分,满分30分)A 篇阅读21 -24CDBAB 篇阅读25-28 BABDC篇阅读29-32 CDCAD 篇阅读33-35 ACB第二节(共5小题:每小题2分,满分10分)36 –40 BFCED第三部分英语知识运用(共两节,满分45分)第一节完形填空(共20 小题:每小题1.5分,满分30分)完形填空41-45BDABC 46-50 ACBAD 51-55CDACB 56-60 DABCD第二节英语知识运用(共10小题:每小题1.5分,满分15分)61.with 62. to approach 63.talented 64. has provided 65. relatively 66. whom 67. expectations68. hurts 69.writing 70. shall/will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)Yesterday our club held an English speech contest, which theme is “ Challenge Myself ”. A largewhosenumber of students attended to the contest and showed their wonderful performances . In theOn stage, though face great pressure, the speakers bravely overcame it and challenged them to achieve facing themselvesgreat success. What’s more, they impressed us deep with their unusual confidences anddeeply confidence performances.Through such∧ activity, we know a lot more about our students . But we have gained much, an Andsuch as self-confidence and honor. Besides, our club was growing stronger.is第二节书面表达(满25分)One Possible Version:Dear Sir or Madam,I’m writing this letter to apply to work as a volunteer you have advertised for. In my opinion, not only can volunteer work help me enrich my knowledge and experience, but also it can help the visitors from all over the world to know better our school.I am good at English. In addition,in the past three years I have taken part in many social activities in which I performed well and gained rich experience. Furthermore, my interest and skill in communication and teamwork contribute to my application for the job.I would appreciate an interview at your convenience. I’m looking forward to hearing from you in the future.With all my best regards.Yours sincerely,Li Hua 听力材料Text 1M: Happy Valentine’s Day, Nancy! Would you like some chocolate?W: Oh, I really wasn’t expecting a Valentine’s gift. This is great! I love chocolate! Thank you so much!Text 2W: Hi, Gabriel. How was your first day of work?M: It was okay. The only bad thing was the cat in the office. I was sneezing all day!W: People should not be allowed to bring their pets to work in my opinion.Text 3W: Wow, James. I am really impressed with the computer you built. Did it take a lot of work?M: I made five others before this one, so it is a piece of cake for me now.Text 4M: Josie, would you mind helping me paint my bedroom tomorrow? My brother was going to help me, but he broke his arm yesterday. I will make you lunch...what do you say?W: Of course, I will help you, Oliver. I am sorry to hear about your brother’s arm. I hope he feels better soon. Text 5M: Claire, have you seen my backpack? I can’t find it.W: Um, look in the mirror. I think I last saw it on your back!Text 6M: Loretta, I saw you on the news last night! That was really exciting!W: Thank you. I had a lot of fun.M: So, you won a contest, and you received your prize on the news at eight o’clock?W: Kind of. I won a music competition. The prize was a trip to the television station. Then I got to perform the song I wrote. What did you think of the song?M: I thought it was absolutely beautiful, but I didn’t know you wrote it. I thought it was written by a professional singer. Very impressive, Loretta! Do you have plans to be a singer?W: I will just keep singing and see what happens. Even if I never become famous, this is what I love to do every hour of every day.M: That is very admirable.Text 7W: Hello, Mr. Benjamin. How are you doing today?M: I am doing very well, Lily. How are you?W: Fine, thanks.M: Well, I see you have some new roller skates.W: Yes, they were a birthday present from my uncle. I am trying to practice as much as possible. I want to get as good as Bobby someday.M: Your older brother? How has he been? I haven’t seen him lately.W: Well, he left for school a few weeks ago. He said that if I am really good at skating by the time he gets back for winter break, he will take me to go skating.M: Oh, that sounds like fun. Are you getting a lot of practice in every day?W: I skate to and from school now. It’s a lot of fun, but it can be dangerous. I make sure to wear my helmet every time I skate.M: You’re such a smart girl. Have fun this afternoon!Text 8W: Oh, no, Gregory! I completely forgot what today is.M: What day is it today, Emily? I thought it was just a regular Thursday.W: Well, it is Thursday. But today is School Spirit Day! I don’t have my school sweater with me. I was really looking forward to it.M: Oh, th at’s right! I think I might have an extra one, though. Do you want to go to my cupboard with me and take a look?W: If you have an extra one, that would be great. My science teacher said that if we all wore our school sweaters today, we would earn a prize.M: Here is my cupboard. And it looks like I do have an extra sweater! It may be a little big on you, but it will still do.W: Thank you so much, Gregory! I was spending so much time getting ready for your birthday party tomorrow that I forgot to bring mine this morning.M: Oh, no! I forgot that tomorrow is my birthday!W: Ha-ha! How did you forget your own birthday?Text 9M: Michelle, why are you dancing? I thought we had to study for our math test!W: Oh, hi, Drake! I was just doing some exercise. I thou ght you wouldn’t get here until later. Let me turn the music off.M: You exercise by dancing? I thought things like running and bicycling were considered exercise.W: Well, those are other good ways to work out, but I like to dance. It’s fun to move aroun d to music, and you can definitely work up a sweat. Do you like to dance?M: I sometimes dance at parties, but I am not a very good dancer. For exercise, I prefer playing soccer. I want to get really good this year. I hope to make the soccer team in the fall.W: Cool! I know you like to go to the park on the weekends and play soccer. Maybe you should try dancing, and I will try playing soccer.M: Do you know how to play soccer? It is really very easy once you try, but it does take some practice.W: I can’t play soccer very well, even though I used to play a lot when I was a kid. If you teach me some of your soccer moves, I’ll teach you some dance moves! How does that sound?M: It’s a deal. If there weren’t the math test tomorrow, we could definitely go to the gym right now.W: Right. No more fun and games. Let me get my notebook.Text 10What’s cooking? Nothing! Nothing’s on the stove. Nothing’s in the oven. Almost no one has time to cook anymore. Both women and men work. Parents are spending time with their kids. Senior citizens are out playing golf, and teenagers are always busy.Everybody needs to eat, but meals need to be quick and easy! So what do we do? Nearly 80% of people in the United States buy take-out food at least once a month. Many people buy it every day. Most of us are in a hurry sowe get fast food like pizza or hamburgers. We often eat in our cars. But some of us are tired of eating fast food. We want to eat dinner at home with our families and friends. We want food that tastes like home cook ing. We’re hungry for healthy meals with main dishes like fish, roast beef, or pasta and side dishes like rice, potatoes, or steamed vegetables. And sometimes we want dessert like cake, pie, or cookies. Fortunately, there is a solution to this problem.Just use your computer to look up food businesses on the Internet, will show you a list of restaurants in your neighborhood. You can also see the menus. Type the name of the restaurant and the meal you want on the Web page. Your dinner can be ready in an hour. You can also order dinner for next week or next month. The restaurant will deliver your meal to your home or business, or you can pick it up.Now you don’t need to cook to get a good, hot meal. All you need is a computer ... and a good appet ite!第二部分:评分标准、细则一、语法填空题评分标准及细则62.with 62. to approach 63.talented 64. has provided 65. relatively66. whom 67. expectations68. hurts 69.writing 70. shall/will1.每题1.5分,共15分。

河北省衡水中学2019届高三下学期大联考卷Ⅱ理科数学试卷及答案

 河北省衡水中学2019届高三下学期大联考卷Ⅱ理科数学试卷及答案
绝密★启用前
姓名
准考证号
2019年全国高三统一联合考试
理科数学
本 试 卷 4 页 ,23 小 题 ,满 分 150 分 。 考 试 时 间 120 分 钟 。 注意事项:
1.答 题 前 ,考 生 务 必 将 自 己 的 姓 名 、准 考 证 号 填 写 在 答 题 卡 上 相 应 的 位 置 。 2.全 部 答 案 在 答 题 卡 上 完 成 ,答 在 本 试 题 上 无 效 。 3.回答选择题时,选出每小题答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑。如 需改动,用橡皮擦干净后,再选涂其他答案标号。回答非选择题时,将答案用0.5 mm 黑色笔迹 签字笔写在答题卡上。 4.考 试 结 束 后 ,将 本 试 卷 和 答 题 卡 一 并 交 回 。
[ ) A.(-∞,-3]∪ 1 2,+∞
( ) B.(-∞,-3)∪ 1 2,+∞
[ ] C.-3,12
( ) D.-3,1 2
3.函

f(x)=2x
x3 +2-x






A
B
C
D
4.已知等差数列{an}的首项a1=31,公差为d(d 为整数),若数列{an}的前8项和最大,则d=
A.-2
B.-3
.
15.已 知 甲 、乙 、丙 、丁 4 人 同 时 到 5 个 不 同 的 地 区 参 加 扶 贫 活 动 ,若 每 个 地 区 最 多 有 2 人 参 加 (2
人 到 同 一 个 地 区 ,不 区 分 2 人 在 其 中 的 角 色 ),则 甲 、乙 、丙 、丁 4 人 参 加 扶 贫 活 动 的 不 同 安 排
C.-4
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姓名______________________ 准考证号_______________________绝密★启用前2019年全国高三统一联合考试英语本试卷满分150分。

考试用时120分钟。

注意事项:1.答题前,考生务必将自己的姓名、准考证号填写在答题卡上相应的位置。

2. 全部答案在答题卡上完成,答在本试题上无效。

3. 回答选择题时,选出每小题客案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,在选涂其他答案标。

回答非选择题时,将答案用0.5mm黑色笔迹签字笔写在答题卡上。

4. 考试结束后,将本试卷和答题卡一并交回。

第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上,录音内容结束后,你将有两分钟时间将试卷上的答案转涂到答题卡上。

第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话,每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题,每段对话仅读一遍。

例: How much is the shirt?A. £19.15.B. £ 9.18C. £ 9.15 答案是C.1. What is the woman looking for?A. Her purse.B. Her train ticket.C. Her glasses.2. How did the women go to school today?A. By bus.B. By bike.C. On foot.3. When will the speakers probably meet?A. At 9:30.B. At 9:45.C. At 10:00.4. What does the woman think of the talent show?A. Interesting.B. Exciting.C. Boring.5. What's the probable relationship between the speakers?A. Classmates.B. Neighbors.C. Teacher and student第二节 (共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。

每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。

听每段对话或独白前,你将有时间阅读各个小题,每小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料,回答第6、7题。

6. What are the speaker is going to do this afternoon?A. Go to the cinema.B. Stay at home.C. Go to the beach7. What does the woman mean?A. She didn't get sunburnt last time.B. The new suncream will work wellC. They will meet with some trouble.听第7段材料,回答第8、9题。

8. Where will the girl have her birthday dinner?A. In an Italian restaurant.B. Ina Chinese restaurant.C. In her classmates' host family.9. What will the girl probably take to the dinner?A. Cakes.B. Ice cream.C. Fruits听第8段材料,回答第10至12题.10. What is the woman?A. A hotel clerk.B. A travel agentC.A tour guide11. Why does the man go 1oBrighton?A. On businessB. On holiday.C. For sightseeing12 What will the man do first tomorrow morning?A. Call the woman.B. Have a break.C. Have a meeting听第9段材料.同答第13至16题。

13. What's wrong with the woman now?A. She's having a fever.B. She's having an earache.C. She’s having a headache14. Where does the conversation probably take place?A. At a clinic.B. At a drugstore.C. At a shopping center15. How often should the woman take the new pill for the first two days?A. Once a day.B. Twice a day.C. Three times a day.16. How long will the woman probably take the new pillA. Five daysB. Seven days.C. Eight days.听第10段材料。

回答第17至20题。

17. Who is listening to the talk?A. The local volunteers.B. The sponsors from the town.C. The employees of the bookstore.18. How long has the bookstore been in the town?A. For 17 years.B. For 18 years.C. For20 years19. What can we say about the speaker?A. He is disappointed.B. He is confident.C. He is worried20. What does the speaker mainly talk about?A. The move of the bookstore.B. The history of the bookstore.C. The opening of a new bookstore.第二部分阅读理解(共两节,满分40分)第一节(共15小题;每不题2分,满分30分)阅读下列短文,从每题所给的A、B、C和D四个选项中选出最佳选项。

AWinners' WeekendFox Factor Competition is your chance for your 5 minutes of fame. Heats will be held throughout Whitsun & Summer Holiday weeks with winners being chosen to enter the grand final at Trelawne Manor in November.All of our heat winners will win a free holiday to Trelawne Manor and the chance to compete in front of a live audience and possibly some celebrity (名人) judges for their chance to win some fantastic prizes.GRAND FINAL PRIZESAges 4---10------- £200 "The Entertainer" Toy Shop Vouchers (代币券)------- Free Short Break HolidayAges l1---17------- £300 Argos Vouchers------- Free Break HolidayAges 18+------- £300 Foxy Shop Vouchers------- Free Summer Holiday------- Free Short Break HolidayRules and RegulationsYou will be permitted to sing one song no longer than 3 minutes. If your act is to last any song or track longer, you may be asked to shorten the routine. If you can please try to bring more than one song or track, this is for the following reasons:1) Another contestant may be doing the same song as you and this will give you the option 10 change it.2) If you are one of the unsuccessful grand finalists, it may prove advantageous to demonstrate to both sets of the judges and the Jive audience your flexibility as a performer.PLEASE NOTE• You may choose 10 sing without musics however. this is not advisable.• The use of smartphones and iPads will not be permitted in the competition.• We don't supply any musical equipment, so bring your own with you.21. What can we know about all the heat winners?)A. They will get generous cash prizesB. They will be guided by celebritiesC. They will have the chance to enter the grand final.D They will win a free summer holiday at Trelawne Manor.22. What can a twenty-year-old grand final winner get?A. £200 Foxy Shop Vouchers.B. £300 Argos VouchersC. Free Break Holiday.D. Free Summer Holiday.23. What is the competitor advised to do?A. Sing not using musicB. Prepare more than one song.C. Choose a song lasting 5 minutes.D. Use smartphones and iPads.BOn August 5 just after 7.30 pm, Mike Estepa suffered a massive heart attack. The crazy cyclist was 40 kilometres into his Sunday ride when he stopped by the side of the road to text his family saying he’d be home in about 30 minutes. Moments later, he was lying in the ditch, unconscious.Larissa Arthur was driving back to Calgary from a hike in Field, B. C. with a friend. It was a warm and sunny day, and the two were chatting when a flush of yellow caught Arthur's eyes, She immediately pulled off the road.As Arthur approached the figure. she feared the worst: Estepa was covered in ants and exhibited no signs of life. There was no pulse and he wasn't breathing." says Arthur. A bystander called 911 and Arthur, a registered nurse, started chest compressions. She and two other drivers took turns carrying out CPR for the next 15 minutes before medical teams,arrived and whisked Estepa away.Two days later, when Estepa woke up in the hospital, he was shocked to learn he had gone into cardiac arrest (心脏骤停). How did thishappen, and ,why was he lucky enough to have survived? He was full ofgratitude and needed 10 speak with the woman who had saved him, whom henamed his "angel” .“It was emotional,” says Arthur of her meeting with Estepa afew weeks later. Saving his life had extra importance for her: the bikeshe was returning from that day was one of 100 she's planned to honourher father, who died in 2017 after he fell during a hike that Arthur wasmeant to be on. "I couldn't save my father's life." Arthur says, "butthis was a chance for me to save someone. "24. Why did Mike Estepn stop while riding?A. He suffered a heart attack.B. He wanted to senda message.C. He would like to lie in the ditch.D. He was too far awayfrom his home.25. What do we know about Arthur?A. She was an amateur nurse.B. She was scared of ants.C. She knew how to do CPR.D. She went cycling witha friend.26. What did Arthur think of her saving Estepa?A. Grateful.B. Lucky.C. SignificantD. Natural.27. What's the best title of the text?A. A Miracle to Return to LifeB. An Angel on theRoadsideC.A Risky Cycling AloneD. A Chance to Save LifeCOn Nov.24, near Yellowstone's northeast entrance, Spitfire. afemale grey wolf, was shot and killed by a hunter as she approached agroup of cottages."It was a legal harvest." Abby Nelson, a wolf managementspecialist said. The circumstances are obviously a little bit harder forpeople to stomach, but that pack has showed signs of habituation (习惯). They just stand there and have no fear. Wolf hunters can easily pickthe one they want. "The carefree relation that some Yellowstone wolves have builtwith humans is reportedly attractive for hunters who look for an easykill.In the wake of yet another famous Yellowstone wolf meeting aviolent end outside the park, officials are actively rethinking, how tomanage wildlife habituationSmith, a wolf biologist for Yellowst one says, “Now we rethinking of pounding them. "Park officials might use fireworks, andpaintball or beanbag guns when they approach humans in the park. "If youget close to people, you're going to get attacked."If you think this sounds cruel, you're not alone. Seeing thesecreatures from the roads that wind through the park not only allowstourists to witness something amazing. but also to reconnect with naturein a way that is better than any conservation campaign. But there's alsoa growing sense that the present policy of doing nothing isn't workings:more wolves will needlessly die and the broken record of hunters scoringeasy kills will goon.As Smith adds. urging people to keep wolves wild when meeting themhalfway is a big ask. Sill, he's hopeful to preserve the world's bestplace to observe free ranging wolves; it’s a policy change that touristscan be involved in.“.......Perhaps Spitfire’s death will accomplish some good andwe'll all come together to a better job on managing crowds and roads andwolves in Yellowstone," Smith said.28. What was the main reason for the death of Spitfire?,A. Wildlife habituation.B. Park officials’carelessnessC. The nature of grey wolves.D. The cruelty of thehunter.29. What does the underlined word “pounding" in par agraph 5 probablymean?.A. GreetingB. ProtectingC. Challenging.D. Hitting.30. What does Smith expect visitors to do in Yellowstone?A. Be more friendly to wolves.B. Avoid meeting grey wolves.C. Keep away from wolves.D. Force wolves away from them.31. What is the main idea of the text?A. The wolves in Yellowstone are out of control.B. illegal wolf -hunting in Yellowstone is going on.C. Yellowstone considers "attacking" wolves to protect them.D. The wolves in Yellowstone are living in harmony with humans.DAlmost every second of every day an older adult falls in theUnited States. That's approximately 29 million falls per year and nearly27,000 deaths. according to the Centers for Disease Control and Prevention.Still in the stating stage, the Active Pelvis Orthosis (APO)system in Switzerland wants to make a lightweight, wearable exoskeleton(外骨骼) that could detect signs of balance loss and assist with balancerecovery to keep the elderly wearer from falling, only when needed.Other exoskeletons, either in development or on the market today, assist with movement and make heavy objects feel lighter. Mobility-impaired people can walk again. But none of these devices predict what the wearer is going to do next and take measures to correct an unsteady move.The 3 kilogram (6.7 pound) exoskeleton was built entirely from scratch by the research team and is designed to be worn on the lower half of the. body. A waistband connects to two movable carbon fiber braces (支架), each one positioned on the outer side of a leg. Tiny motors and so-called “adaptive os cillat ors” (适配振荡器) in the computer circuits use a special process to detect the, wearer's unique paces. That part takes just a few minutes.While wearing the exoskeleton, a person may feel the braces and the motors pushing slightly on their legs. If their paces go against normal, the motors create a force in the braces that cause them to stiffen up and push a little more strongly against the legs, which provides stability.In the next three years, the APO hopes to develop something that is commercially available.32. Why is the new exoskeleton invented?A. To slower users' walking paces.B. To improve users’ walking abilityC. To promote users' sense of balance.D. To prevent users from falling33. What’s the feature of the new exoskeleton?A. It keeps users warm.B. It is worn on the back.C. It helps users move around.D. It corrects an unsteady move.34. What does paragraph 4 mainly talk about?A. How the new exoskeleton works.B. Where the braces are positioned.C. How long it takes to detect the user's pacesD. What the new exoskeleton was built from.35. What is the purpose of the author in writing this text?A. To call on care for the elderly.B. To introduce a new invention.C. To advertise new deviceD. To bring hope for the elderly.第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处最佳选项,选项中有两项为多余选项。

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