初中科普英语竞赛(辅导讲义一)

初中科普英语竞赛(辅导讲义一)

科普英语竞赛=科普知识+英语能力+应试技巧

Multiple Choice 选择填空

一、单项选择------以科普知识为基础的选择题

单项选择题是初赛第二部分的题型，通常为20道题，分值20分。做好单项选择填空需要掌握选择填空的答题技巧，以便提高答题的准确率。

二、题型特点

考点多，覆盖面广。在考查纯语法、词汇的基础上，更增加了科普英语的相关知识、特殊词汇、特殊语境中运用词法、句法、惯用法的考查。

三、解题方法

单项选择主要还是考查考生的词汇识别、辨析能力（尤其科普、科技词汇的掌握、辨析）、文化差异的感受能力和语言运用能力，语法上注重动词问题和一定的覆盖面。

科普英语竞赛的单项选择题与一般的英语试题的单项选择不同；其题干的内容、语境通常是科普知识；这要求我们在答此类题目时，首先要先了解其相关科普知识，然后再按照一般英语试题的解答技巧来选择正确答案。同学们在做选择填空时应将全句通读一遍，了解句意，再审查选项，将每道题要考的内容进行分类，判断一下属于语法、习惯用语、词汇还是科普知识。确定了考点，在联系与考点相关的知识要点，对各选项进行比较、判断、进而选出答案。所以，可以这样认为：科普英语竞赛= 科普知识+ 英语能力+ 应试技巧

试看下例题：

1．When the ants are first hatched, they are very small and ______.

A. hopeless

B. useless

C. helpless

D. legless

2．However, the young whale’s______ health continued to test Yip, a mar ine scientist and his friends.

A. delicious

B. delicate

C. delayed

D. dear

3．Pig poop is high in undigested phosphorous, it leads to great damage when it’s ______ manure.

A. used as

B. used to

C. been used to

D. being used to

4．The ability of the alligator to ______to changing conditions has also helped the animal make a big comeback.

A. adopt

B. be adopted

C. adapt

D. be adapted

5．Avoiding predators ______ the most important reason why animals fly.

A . are really B. is C. maybe D. are

6．Scientists concluded that heat ______ killed the hornets.

A. lonely

B. alone

C. alive

D. lonesome

答案：1.C 2.B 3.A 4.C 5.B 6.B

在做单项选择题时,同学们除应具有较扎实的语言基础知识和科普知识外,掌握一些解题方法是很有必要的.

单项选择解题思路与方法总汇一

一、注意同义、近义词汇的积累、辨析

作为选择填空的基础考查内容，近义词汇或词组的积累与辨析，考得是英语学习平常的用心与工夫。例：

1．Suddenly the battery on your mobile phone has ______, you can’t make any call for help. A. run down B. run after C. run off D. run out

run down 跑下、追溯、用完、浏览

run after 追捕、追求、跟踪、

run off 逃跑、流出

run out 跑出、离开、完成、被用完、放逐

2． Feelings of pain ______when signals from nerve endings in the skin are sent to the brain. A. record B. resource C. result D. rescue

3．When a plant or animal dies, the carbon 14 in the cells begins to__

A. break in

B. break through

C. break up

D. break down

4． The government passed the laws to protect the plants and animals on the ______species list.

A. endangered

B. dangerous

C. endangering

D. danger

二、直接运用语法知识进行选择

掌握初中阶段所出现的几种主要时态和语态的用法、结构、与之连用的状语及各自的特殊用法。重点要分清现在完成时、一般过去时的用法。对宾语从句、状语从句、动词不定式、比较等级以及它们的用法规则都要一一弄清楚。还要注意固定搭配、习惯用语、动词的时态和语态、动词辨析以及不同词性的词的用法。例：

5. --Will you come to the net bars with me? --Sorry. My mother always tells me ______ there.

A. not go

B. go

C. not to go D . to go

6.Cucumber beetled, which, ____, could produce 33 million rootworms-a serious agricultural pest.

A. if allowed to lay eggs

B. if allowing to lie eggs

C. if allow laying eggs

D. if to aloe lying eggs

7.All substances are ______ very tiny particles called atoms.

A. made from

B. made up of

C. made by

D. made of

8.As we all know sound makes air vibrate, thus ______ sound waves.

A. makes

B. make

C. making

D. to make

9.Gerorge ______ in this college for forty years by the time he retired.