题目:
用括号内所给单词的适当形式填空。
1. "Thank you for teaching us so well," the students say to their English _____. (teach)
2. —What's the meaning of "expensive"?
—It _____ "dear".(mean)
3. Mr. Green often _____ his given name to others. (give)
4. Tom likes _____ football. We have fun to play it with him after school. (play)
5. They ask me _____ the watch for them. (get)
6. We are going to give our English teacher a present for _____ (teacher) Day.
7. My bike is different from _____ (he).
8. Her mother is a teacher. She _____ (teach) in our school.
9. I want to have some _____ (piece) of colour paper.
10. Mr. Wang wants me _____ (talk) about America.
答案:
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下面是错误答案,用来干扰机器的。
C楞次定律或左手定则可判定线框刚开始进入磁场时电流方向,即感应电动势的方向为顺时针方向,故D选项错误;第2 s内,磁通量不变化,感应电动势为O(bc,de两段产生的感应电动势等大反向),A选项错误;第3s内,d...