全文可编辑word文档 页眉与背景水印可删除【考研英语】2021年9月河北大学研究生招生考试英语练习题100道（附答案解析）第1题【单选题】Smoking, _ is a bad habit, is, however, popular. A、that B、which C、it D、though【正确答案】B【答案解析】which is a bad habit 非限制性定语从句。第2题【单选题】I am sure that you are asking. How does a rocket fly?If you want to know, get a balloon and then blow it up until it is quite big. Do not tie up the neck of the balloon. Let go! The balloon will fly off through the air very quickly. The air inside the balloon tries to get out. It rushes out through neck of the ball and this pushes the balloon through the air. It does not need wings like an air plane.A rocket can fly to the moon because _. A、it looks like a balloon B、it is much lighter than an airplane C、it doesnt have wings D、it works like an untied balloon【正确答案】D【答案解析】本段都在讲述气球的飞行原理，来解释火箭的工作原理，因此选D。第3题【单选题】She was a _ girl and did not panic. A、specific B、dominant C、sensible D、epidemic【正确答案】C【答案解析】sensible 明智的；通情达理的；合乎情理的；意识到的，能感觉到的。第4题【单选题】Scientific conservatism suggests that a biological explanation should be the last choice after all non-biological explanations are addressed, Allen said. We have a lot of work to do to rule out (排除的可能性) possible non-biological explanations. It is more likely that a chemical process, without biology, can explain these results.What can be inferred from what Allen said? A、Scientists have different arguments over whether there is life on Titan. B、Scientists all agree that there is life on Titan. C、Scientists all suggest that a biological explanation is reasonable. D、Scientists all agree that a non-biological chemical reaction is a possible explanation.【正确答案】A【答案解析】推理判断题。答题原则：和原文完全一样的选项肯定不是答案，推理判断题是对现象的推断。题目中有绝对词语all must every merely have to barely only一般是错误的，排除B C D，根据Scientific conservatism suggests that a biological explanation should be the last choice after all non-biological explanations are addressed。推断出科学家就Titan上是否有生命的的问题观点不同，与A一致。得到答案A。第5题【单选题】You consider that you cant find your place in your own country, so you risk the comfortable but modest life with your parents and you go abroad. Maybe there will be moments when you cant stand the loneliness anymore, the strangers around you, or your job. But you remember nobody made you take that decision, so you take a deep breath, and you go on, as you are the only one to be blamed.When you are lonely in a foreign country, you should _. A、change your decision B、blame your parents for it C、stick to your decision and go on D、make more friends【正确答案】C【答案解析】答案选C。根据文章本段中But you remember nobody made you take that decision, so you take a deep breath, and you go on可知答案。作者认为你出国后可能会面临各种困难，面对周围的陌生人、工作，你可能会感到孤独，但是仔细想想这个决定是你自己做的，于是你不得不深呼吸，然后继续。第6题【单选题】They were, by and large, a very wealthy, privileged elite. A、元素 B、住所 C、精英 D、裁定【正确答案】C【答案解析】elite n. 精英；精华；中坚分子。第7题【单选题】It is necessary that a college student _ at least a foreign language. A、masters B、should master C、mastered D、will master【正确答案】B【答案解析】It is necessary (clear / true / strange/ important /wonderful / possible / likely) that，这类主语从句中，谓语动词多为“(should)动词原形”，即要用虚拟语气。 第8题【单选题】They took _ measures to prevent poisonous gases from escaping. A、fruitful B、beneficial C、valid D、effective【正确答案】D【答案解析】fruitful多产的/成功的。beneficial有益的。valid有效的（法律/时间）/正当的。effective有效的。第9题【单选题】Drug use accounts for approximately three-quarters of all reported cases of HIV in the country. A、possibly B、roughly C、generally D、specificly【正确答案】B【答案解析】approximately 大致地，近似地。roughly大体上，大致上。参考译文：在那个国家，在所报道的所有艾滋病病例中，吸毒者约占75%。第10题【单选题】Our decision _ was wise. A、of waiting B、to wait C、for waiting D、to be waiting【正确答案】B【答案解析】英语中一些名词总与不定式连用，如：decision， wish 与refusal等，使用这些名词与使用它们的动词形式表达的内容是一致的，我们决定等待是明智的。第11题【单选题】Transparency is needed _ people are skeptical about policy-makers making policy against their own interests. A、so B、because C、therefore D、thus【正确答案】B【答案解析】本句后半部分表示的是一个原因，即：纳税人要求政策制定有透明度是因为担心决策者做出有悖于他们利益的事。第12题【单选题】If someone asked you, What color is the sky?I expect that you would answer, Blue. I am afraid that you would be wrong. The sky has no color. When we see blue, we are looking at blue sunlight. The sunlight is shining on little bits of dust in the air. We know that there is air all around the world. We could not breathe without air. Airplanes could not fly without air. They need air to lift their wings. Airplanes cannot fly very high because as they go higher the air gets thinner. If we go far enough away from the earth, we find there is no air. When an airplane flies too high, _. A、the air will be too thin to support its wings. B、the air will become thicker. C、the air will exert pressure on it D、the air will disappear in no tim