题目内容

3.深沟球轴承接触角为00，实际工作中只能承受纯径向力，不能承受轴向力。

A. 对
B. 错

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4.滚动轴承型号31215/P52,其中精度等级为2级，游隙组为5组。

A. 对
B. 错

We often hear parents _1_ their children or teachers _2_ their students for daydreaming. People usually take a _3_ _4_ towards daydreaming because they think daydreaming is a waste of time and an _5_ from real life. Well, daydreaming may sometimes be a _6_ of time or an escape, but daydreaming can also _6_ us a lot of good.

选词填空：A. advantage B. benefit C. profit(只需要填写单词前的大写字母，不要小写）1. Mytrip to the south was of much _____ to my health.2. Ithought I'd take_ ofthe sports facilities while I'm here.3. Butwhat's the_ of usingnuclear power?4. Achange in the law would be to everyone's .5. This year's ____ from exports rose to 50%.

课文主题是“dream”。请把下列与“梦"有关的词组进行中英文匹配。