It was the first day of biology class. The teacher wanted to give a good 41 to his class.

It was the first day of biology class. The teacher wanted to give a good 41 to his class. He wanted to 42 his students’ eyes to the world of biology.
He knew that 43 young students was not easy, so he worked 44 and tried to find a good way to teach this class. 45 thinking for a long time, he made a 46 at last. He decided to show the kids something 47 and teach them a lesson at the same time.
He asked his students to 48 carefully. Then he began. He put a worm(虫子) into a glass of water. The worm 49 around in the water. Then he put a second worm into a glass full of alcohol(酒精). It died at once. He asked the students if anyone knew about 50 they learned from it. A boy said, “You showed us that if we drink alcohol we won’t have worms.”
【小题1】A．payB．startC．dayD．tour【小题2】A．go toB．open upC．call upD．keep out【小题3】A．sendingB．fittingC．followingD．teaching【小题4】A．hardB．quicklyC．loudlyD．alone【小题5】A．BeforeB．WhileC．AfterD．When【小题6】A．storyB．decisionC．cakeD．face【小题7】A．crazyB．impossibleC．strangeD．interesting【小题8】A．watchB．useC．listenD．write【小题9】A．fliedB．ranC．jumpedD．swam【小题10】A．whatB．howC．whenD．whyB

(答案→)B 解析：【小题1】此题考查名词，根据语境可知老师想给学生们一个好的开端。故用start。【小题2】此题考查固定短语open up表示开拓。【小题3】此题考查动名词的用法。动名词短语作主语谓语动词用单数。【小题4】此题考查副词，work hard表示努力工作。【小题5】此题考查介词，after表示…之后。【小题6】此题考查固定短语make a decision表示下定决心。【小题7】此题考查形容词，根据下文提示可知选择D，interesting。【小题8】此题考查动词，根据语境可知选择watch，让学生仔细观看。【小题9】此题考查动词，在水应是游泳。【小题10】此题考查宾语从句的引导词，根据语境可知选择what。

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