Lesson21_随堂练习

1、Lesson21 随堂练习一、用括号内所给单词的适当形式填空。1. _( recent), computers and the Internet changed the world again.2. E-books are _ (quick) changing peoples reading habits.3. Lets keep on _ (try).4. The history of computers _ (be) very interesting.5. Which invention is _ (important), the printing press or the Interne

2、t?二、单项选择1. It will be my turn. I feel a bit nervous._ You can make it!A. Congratulations! B. Take it easy.C. Look out! D. Have a good time.2. No matter _ busy he is, he wont give up his hobby.A. where B. how C. what D. who3. Do you know what has happened in Japan recently?The earthquake! Its _ one t

3、hat I have ever heard of.A. a very serious B. a more serious C.the most serious4. I will go to Harbin for my summer vacation. What about you?I havent decided where _.A. go B. went C. going D. to go5. It took Jane three hours _ reading this interesting story.A. to finish B. finished C. finishing三、句型转

4、换1. He spent more than three weeks reading this novel.(改为同义句）It _ _ more than three weeks _ read this novel.2. Please tell us where we will meet this Sunday.(改为同义句）Please tell us _ _ _ this Sunday.3. I have read five books this year. (对画线部分提问）_ _ books _ you read this year?4. The girl in red is Kate

5、.(对画线部分提问）_ _ is Kate?5. I like books and computers.(改为一般疑问句）_ you like books _ computers?四、根据汉语意思完成句子1. 在古代，人们靠讲故事来传递他们的知识。In ancient times, people _ _ their knowledge by _ stories.2. 我们在学习怎样使用电脑。We are learning_ _ _ the computer.3. 制作这张生日贺卡花费了我15分钟的时间。It _ _ 15 minutes _ make the birthday card.4.

6、对于人们来说，在网上买卖书籍更便捷。It is easier _ _ _ buy and sell books online.5. 无论天气怎样，我们都要去那儿。_ _ _ the weather is, well go there.参考答案及解析一、1. Recently 2. quickly 3. trying 4. is 5. more important二、1. B 考查日常交际用语。句意：接下来就轮到我了。我有点紧张。放轻松点，你可以的。Congratulations!祝贺你！Take it easy.放轻松。Look out!当心！Have a good time.玩得高兴。故选B

7、。2. B 句意；无论他多忙，他都不会放弃他的爱好。no matter how = however，后面可以接形容词，表示“无论多”。故选B。3. C 本题考查形容词最髙级的用法。句意：你知道最近日本发生了什么吗？地震！它是我所听说过的最严重的一次。多音节形容词的最高级是在多音节的形容词前加the most，故选C。4. D 考查“疑问词+不定式”结构。句意：我将去哈尔滨过暑假，你呢？我还没有决定去哪里。decide后可接宾语从句，也可接“疑问词+不定式”结构。故排除A、B和C项。5. A It takes sb. some time to do sth.是个固定句型，表示“花费某人多少时间做某事”。句意：读完这个有趣的故事花费了Jane三个小时的时间。故选A。三、1. took him; to 2. where to meet 3. How many; have