问题 单项选择题

关于先天性主动脉狭窄的临床特点,下列错误的是()

A.指发生于升主动脉的先天性主动脉狭窄

B.可能与动脉导管纤维化闭锁过程有关

C.第3~7对肋间动脉建立粗大的侧支循环

D.导管前型伴有动脉导管常有下半身发绀,上半身无发绀

E.下肢血压低于上肢,压力阶差>20mmHg

答案

参考答案:A

解析:主动脉狭窄较常出现于降主动脉起始部,但并不多见于升主动脉。

阅读理解

When you discuss about eating out with your friend, first of all, you must make it clear who will pay for the meal.If somebody suggests having lunch with his friend, he might simply say something like this "I'm afraid it'll have to be some place nearby ,as I have little money." The other person may say. "OK. I'll meet you at  Mcdonald's." This means he has agreed that the two will go Dutch, that is, each person pays for himself. He may say "Oh, no. I want to take you for lunch at Johnson's " This means the person is to pay the  bill(帐单)for both of them. Although the other person is pleased with the invitation, there is one reason why he shouldn't accept it by simply saying "Thank you."

American customs are much the same as those in other parts of the world. American women used to expect men to pay for all the meals. But today, some of them like to. However, if a woman is asked to attend a dinner or a dance outside, the invitaton itself means "Come as my guest". So, as you see, it is a polite thing to make the situation clear at the very beginning.

小题1:             is first of all when you discuss about eating out with your friend.

A.What to eat

B.Where to eat

C.Who will pay for the meal

D.When to eat小题2:If your friend doesn't want to pay for the meal, he may say            .

A.I'm afraid it will have to be some place nearby

B.Come as my guest

C.Oh, no. I want to take you for lunch at Johnson's

D.I don't want to go anywhere小题3:What does "go Dutch" mean?   It means            .

A.go to Dutch

B.travel in Dutch

C.each person pays for himself

D.one person pays the bill for both of them小题4:American women used to             .

A.pay for the meal themselves

B.ask men to pay for all the meals

C.go Dutch

D.eat nothing小题5: Which of the following is the best title?

A.Eating out

B.American customs

C.Where to eat

D.Who pays the bill

不定项选择