1、Unit4 Topic1 SectionC 随堂练习一、根据句意及汉语提示写出正确的单词。1. He knows how to _ (控制) the machine.2. Oceans cover more than half the _ (表面) of the earth.3. He lost his way when he went through the_ (森林).4. He knows _ (每件事) about it.5. The water in the _ (湖) is quite clear. 二、用括号内所给单词的适当形式填空。 1. We must try our bes
2、t _ (protect) the rainforests.2. In the rainforests we cant see everything_ (clear).3. No animal can live at all _ (with) water.4. We must save every _ (drop) of water in our daily life.5. My son is getting _ and _ (strong).三、单项选择。1. Its _ to run in the weather with _ fog.A. dangerous; thin B. dange
3、r; thinC. dangerous; thick D. safe; thick2. Five _ people are waiting for the train. They all look worried.A. hundred of B. hundreds C. hundred D. hundreds of3. As summer is coming, the day is becoming _.A. long and long B. longer and longerC. cold and cold D. colder and colder4. I looked for my wat
4、ch here and there. _, I found it under my bed.A. At once B. At times C. At last D. At first 四、根据汉语提示，完成句子，每空一词。1. 实际上，他的答案是正确的。_ _, his answer is right.2. 你必须把时间和地点弄清楚。You must _ _ of the time and place.3. 请用一些土填上这个洞。Please _ the hole _ some earth.4. 现在雨林正变得越来越小。Now rainforests are _ _ _ _.5. 雨林能帮助调
5、节气候。Rainforests can _ _ _ the climate.参考答案及解析一、1. control 2. surface 3. forest 4. everything 5. lake二、1. to protect 2. clearly 3. without 4. drop 5. stronger, stronger三、1. C 在大雾天气跑步是很危险的。2. C hundred，thousand 等前有具体数字时，词后不加 s；无具体数字时，词后加 s 且与 of 连用。3. B “形容词比较级+ and+形容词比较级”表示“越来越” 。根据 summer可知，天变得越来越长了。故答案为 B。4. C 句意为“我到处找我的手表。最后在床上找到它了。 ”at once 立刻；at time有时；at last 最后，终于；at first 最初，开始。四、1. In fact 2. make sure 3. fill, with 4. becoming smaller and smaller 5. help to control
