2C（s）+O₂（g）=2CO（g）△H=﹣220kJ•mol^﹣1．

其中H﹣H和O﹣H键的键能分别为436kJ•mol^﹣1和462kJ•mol^﹣1，则O=O键的键能为（   ）

①中秋节，我们边吃月饼，边____天上的明月。

②爸爸边喝茶，边____着美妙的音乐。

③李立的书法作品得到了老师的____。

④我小心翼翼地揭开油布，仿佛____一枚巨大的纪念邮票。

    This story is about a young man. He worked very hard at his lessons, so he was too busy to have a rest. At last, he couldn't go to sleep every night. When he went to bed, he closed his eyes and tried to sleep.But the more he tried, the more he stayed awake.

    After a while, he decided to visit the doctor."I just can't go to sleep at night. What should I do?" "I have a suggestion,"said the doctor, "try counting numbers. By the time you reach one thousand, you'll be asleep. I'm sure of it. The next day the man returned to the doctor's office."well," said the doctor, "How are you today? Did you try my suggestion?"

    The man still looked tired, "Yes,"he said, " I tried counting one, two, three…up to one thousand. But when I reached five thousand and sixty-nine, I began to feel sleepy. I had to get up and drink some tea so that I could go on counting up to one thousand, but then I still couldn't fall asleep.

我能准备理解课文《七月的天山》中的难句，并写出解析。

①蓝天衬着高耸的巨大的雪峰，太阳下，雪峰间的云彩就像白缎上绣了几朵银灰色的花。

②融化的雪水，从高耸的山涧，从峭壁断崖上飞泻下来，像千万条闪耀的银链，在山脚下汇成冲击的溪流，浪花往上抛，形成千万朵盛开的白莲。

③沿着白皑皑群峰的雪线以下，是蜿蜒无尽的翠绿的原始森林，密密的塔松像撑开的巨伞，重重叠叠的枝桠，漏下斑斑点点细碎的日影。

④马走在花海中，显得格外矫健；人浮在花海上，显得格外精神。