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问题 单项选择题

关于胆汁的叙述，正确的是

A．胆汁只在消化期产生排人小肠

B．胆囊胆汁较肝胆汁偏碱性

C．胆汁中与消化有关的成分是胆盐

D．高脂肪食物引起胆汁流出最多

E．胆汁含有消化酶

答案

参考答案：C

选择题
请你估算一下大气对物理课本表面的压力大约是（P0 =1.0×105Pa）

A．5×105N

B．5×103N

C．50N

D．5N
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单项选择题


Questions 21 to 23 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions.
Now listen to the news


How long has Burma’s military been in power

A．For more than 30 years.

B．For more than 20 years.

C．For more than 50 years.

D．For more than 40 years.
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