关于主动脉与肺动脉的描述，正确的是（）。 A.主动脉起自左心室

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问题单项选择题

关于主动脉与肺动脉的描述，正确的是（）。

A.主动脉起自左心室，发出左、右动脉进入肺脏

B.肺动脉起自右心室，发出后分为左、右肺动脉

C.肺动脉起自左心室，发出后分为左、右肺动脉

D.主动脉起自左心室，由升主动脉、主动脉弓、胸主动脉和腹主动脉组成

E.B+D

答案

参考答案：E

听力题

小题1:.The ______ (多数人) of the employees in the company have

university degrees.

小题2:. Very few people have ______ (成功) in losing weight.

小题3:. Although the two problems are very ______ (相似的), we can

find some differences.

小题4:. It is no use ______ (后悔) your past mistakes.

小题5:.Dave has visited many other places of interest in Beijing ______

(除了) the Summer Palace.

小题6:.. Earthquake are ______ (极其) difficult to predict.

小题7:.______ (品尝) this coffee and see if you should add some more

sugar to it.

小题8:. The careless driver was to ______ (责备) for the accident which

had cost one passenger his life.

小题9:. It’s considered good ______ (礼貌) in some countries to leave a

little food on your plate.

小题10:. Is it ______ (方便) for you to buy me something to eat when

you go out?

判断题

压力容器法兰用于设备筒体与封头的连接。