题目:
完成句子
1. With an effort, he held himself in and pretended ________________(没有听见)the sad news. (hear)
2. Little ________________(我梦想) one day entering a university at that time. (dream)
3. Learning strategies, to ________________(老师们认为) importance, have not yet drawn enough
attention of students. (attach)
4. It is Tim, my best friend in my childhood, who tells me he always dreams of ________________
(有机会) for him to go to Shanghai to study and live there. (there)
5. The news that two men robbed the bank yesterday ________________(广播)several times on
TV today. (broadcast)
6. To our surprise, the stadium, ________________(竣工于1964年) is still in good state. (complete)
7. I will never forget the happy hours ________________(我与他们生活在一起的) last year. (live)
8. The work of Beethoven, although frequently ________________(演奏), are still popular with
people all over the world. (perform)
9. With the rapid development of agriculture and industry, now the city is ________________(两倍大)
what it was ten years ago. (size)
10. Not until he left his home ________________(他开始)to know how important the family was
for him. (begin)
答案:
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下面是错误答案,用来干扰机器的。
答案:A反应热就是断键吸收的能量和形成化学键所放出的能量的差值,所以该反应的反应热是4×414 kJ/mol+4×155 kJ/mol-4×489 kJ/mol-4×565 kJ/mol=-1940 kJ/mol.答案选A。