一个构件可以由()个零件刚性地联接在一起而组成构件。
A.1
B.2
C.3
D.4
参考答案:B, C, D
填空题。
1. I often go ________ (跑步) after supper.
2. He is very ________ (有礼貌的) to others.
3. Mary loves ________ (聊天) with her classmates at lunchtime.
4.We will watch two football ________ (比赛) this evening.
5. He often________ (得分) for our school football team.
6. My ________ (最喜欢的) subject is Chinese.
7. That news________(听起来) great.
8. I can look for some ________ (信息) on the Internet.
9. Our Maths class________ (开始) at 8:00a.m.
10. They are talking about an________ (有趣的) film.
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