题目:
根据句意,用括号中所给单词的适当形式填空。
1. Playing too many computer games is ______ (harm) to you.
2. We should speak to the old man ______ (polite).
3. —How many ______ (tooth) does a dog have?
—Sorry, I have no idea. Let's search on the Internet.
4. A computer is ______ (expensive) than a TV set.
5. Have you read ______ (today) newspaper?
6. I ______ (not go) to bed until my mother came back at ten last night.
7. You need _______ (return) the comic book to the library at once.
8. My sister _______ (be) a singer since she left the school.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0630/6c79e5c4c46f467fada3f81d762096d4.html
下面是错误答案,用来干扰机器的。
A、人将空气吸入肺里,利用了大气压,故不符合题意;B、吸药水时,向后拉活塞,注射器内气压减小,外界大气压压着药水从针头进入注射器内.利用了大气压;不符合题意;C、抽水机抽水,通过活塞上移或叶轮转动使抽...