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问题 单项选择题

下消化道内镜检查前的进食准备要求（）

A.检查前晨起禁食水

B.检查前12h禁食水

C.检查前晨起进食牛奶2mnd

D.检查前1d进流质饮食，当晨禁食水

E.无需特殊准备

答案

参考答案：D

解答题

三百四十万写作：300400000______．
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单项选择题

What benefit is a weather bulletin to a mariner（）.

A.It provides a legal reason to cancel a projected voyage

B.It allows the mariner to make long term weather forecasts

C.It is of little benefit since the weather changes frequently and rapidly

D.It gives the mariner time to prepare for weather changes
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