第二节根据所给句子意思以及汉语或首字母提示，写出下列各句中所缺单词的正确形式。(共15小题；每小题1分，满分15分)
11. If you _______________(违反) the regulations, you shall be fired. Be responsible for your job.
12. His father always reminded him to look out for ________________（潜在的）dangers ahead.
13. Leaving the doors unlocked is a(n) ________________ (诱因) to burglars.
14. At the end of each term, teachers are required to __________（评估）the performance of students.
15. I believe Mary will turn up at eight. I know she is always very ______________ (准时的）for meetings.
16. We shouldn’t change lanes without _________________(发信号) or giving wrong signals.
17. We cannot put the theory into practice because of the fact that it has been based on a series of wrong _________________. (假设)
18. His father a__________________（陪伴）him to school every day; he is too young to go alone.
19. Ann likes to buy goods in large q__________________ so that she needn’t go shopping often.
20. A sore throat and fever were the s__________________ of serious flu.
21. She has mastered English grammar and a__________________ a large vocabulary without the help of a teacher.
22. We had to p________________ going to France because the children were ill.
23. The young fellow is a__________________ and likely to quarrel with anyone at any time.
24. Time p_________________, I would like to go fishing with you this weekend.
25. On hearing the terrible accident, you could never imagine how I worried when I was told that you two went home s________________ on such a rainy night.
是定义在（-1，1）上的奇函数，且
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出自江苏南京及其周边地区的雨花台砾石层 产于江苏昆山，由地下深处的二氧化硅热熔液，侵入到断层破碎带内，冷却后形成网络状白色石英 因盛产于太湖地区而古今闻名，主要是石灰岩 1.关于“江苏三大名石”成因的分析，正确的是 