_____ according to the instructions, the robot can behave like a human being with average IQ.
A. When to operateB. When operating
C. When to be operatedD. When operated
The door _____ open, no matter how hard she pushes.
A. doesn’tB. can’tC. won’tD. shouldn’t
When I first met Doris I didn’t like her, but I ______ my mind.
A. have changedB. changeC. had changedD. would change
An air crash accident happened to the plane, ______.
A. nobody aliveB. nobody was alive C. and nobody aliveD. where nobody alive
I wondered what difficulty he had _____ the plan.
A. to carry outB. carrying outC. carried outD. with carrying out
假设你叫李华，你的朋友Jenny向你询问有关如何保持健康的问题。请你给她发一个电子邮件，提一些建议。内容要点如下：
注意合理饮食，要多吃鱼、肉、豆类等，特别是新鲜蔬菜和水果，不要吃太多甜食。
注意锻炼身体，劳逸结合，多参加体育锻炼。
3、保证充足的睡眠，不要熬夜，每天至少睡8个小时。
3、保证充足的睡眠，不要熬夜，每天至少睡8个小时。
注意：1、词数100左右。2、注意行文连贯。3、开头与结尾已经写好。
Dear Jenny,
How nice it is to hear from you! In your letter you asked me how to keep healthy. Here is my advice.
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Yours,
Li Hua
