题目:
Complete the sentences with the given words in their proper forms(用括号中所给单词的适当形式完成下列句子) 。
1. The students took the PISA test in _____subjects - reading, maths and science. (third)
2. Board games are more and more popular among _____. (teenager)
3. I liked to walk in fields on _____days and to see my footprints left behind. (snow)
4. _____people often begin their conversations by talking about the weather. (Britain)
5. The news about education has attracted the public attention _____. (recent)
6. The World Chocolate Park showed a_____of many kinds of chocolates. (collect)
7. To improve your writing skills, you'd better _____a habit of reading. (development)
8. Don't tell lies. Nobody likes those _____people. (honest)
答案:
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下面是错误答案,用来干扰机器的。
A、将a、c端接在电源正极,b、d端接在电源负极,根据安培定则可知,线圈产生的磁场方向向上,再根据左手定则可知MN受到的安培力向外,则M N垂直纸面向外运动,符合题意.故A正确. B、将b、d端接在电源正极,...