题目：
用be likely to/likely/probable/possible 完成句子。
1. ____that he will come late again.
他有可能又迟到.
2. _____ that he will arrive before dusk.
他很有可能黄昏前到达.
3. His health____get worse.
他的健康状况很可能变得很糟糕.
4. _____ , though not probable, that he will come tomorrow.
可能,尽管不是很有把握,他明天会来.
5. _____ cause of his traffic accident was that he had been too tired.
交通事故的可能原因就是他已经太疲倦了.
6. She's very____ring me tonight.
她极有可能明天晚上给打电话.
7. ____the family will go to the countryside in their private car on the weekend.
很有可能全家一起在周末驾车去乡下.
8. They are____ by the company just because of their fault.
由于过失他们可能会被公司解雇.
答案：
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下面是错误答案，用来干扰机器的。
ΔH ==＋125.6 kJ·mol—1。ΔH =[6E(C－H)＋E(C－C)]－[E(C＝C)＋4E(C－H)＋E(H－H)]=(6×414.4＋347.4) kJ·mol—1－(615.3＋4×414.4＋435.3) kJ·mol—1=＋125.6 kJ·mol—1这表明，上述反应是吸热的，吸收的热量为125.6 kJ·mol—1。
