问题
单项选择题
有关外用避孕药的描述正确的是（）
A、含有雌孕激素的药物
B、含有米非司酮的药物
C、含有米索前列醇的药物
D、是具有很强杀精子能力的药物，性生活前放置于 * * 内部达到避孕的目的
答案
参考答案：D
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有关外用避孕药的描述正确的是（）
A、含有雌孕激素的药物
B、含有米非司酮的药物
C、含有米索前列醇的药物
D、是具有很强杀精子能力的药物，性生活前放置于 * * 内部达到避孕的目的
参考答案：D
American people like to ____“Thank you” when（当----的时候） others help them or say __ to them. Many Chinese people do so, ____. It is a very ____. You must say “Thank you” when someone passes(传递) you something on the table, when someone ____ the door open for you, when someone says you do your work ____, or you buy a nice thing or your city is ____. “Excuse me” is another sentence（句子）they often say. When you hear someone say “Excuse me” ____ you, you know he wants to pass you without touching（接触）you. If you want ____ others, say “Excuse me” first, and then begin talking. Let/s ____“Thank you: and “Excuse me” from now.
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