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问题 选择题

—Your father doesn't look well these days.

—Yes. He has had a toothache, but he keeps ______ going to the dentist. [ ]

A. putting off

B. getting off

C. setting off

D. taking off

答案

答案：A

问答题

桑白皮散1功效与作用
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单项选择题

请根据下面短文回答下列题：
Safety Rules for Bike-Riding.
1. Never ride out into a street without stopping first.
2. Watch for stop signs.
3. Look behind before turning or changing lanes (车道) .
4. Always ride on the right.
5. Never follow another rider without applying the rules.
Remember, your bicycle is a small compared with cars and trucks. It is not easily seen on crowded streets and will seldom attract attention on its own. At all times, do everything you can to make sure you are noticed.

When do bike-riders ride on the right of side of the street
[A] Always.
[B] When they come into a street.
[C] When they change lanes.
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