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问题 填空题

丹参提高血小板内CAMP浓度是由于抑制了（）所致．

答案

参考答案：磷酸二酯酶

单项选择题

墙面砖铺贴前应浸水( )h以上，晾干表面水分后使用

A．1

B．2

C．3

D．4
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单项选择题

Questions 24-30


·Look at the questions for this part.
·You will hear a passage about "Health and Fitness ". You will listen to it twice.
·For Questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response.
·Mark one letter A, B, or C on the Answer Sheet.

Which of the following is NOT a reason why Americans are consuming more and more fast food at restaurants

A．Fast food is often the cheapest.

B．Fast food is believed to be nutritious.

C．Americans simply like fast foo
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