以下哪种先天性心脏病属右向左分流型（）。 A.房间隔缺损 B.室间隔缺损 C.动脉导
题型：单项选择题 A1/A2型题
问题：
以下哪种先天性心脏病属右向左分流型（）。
A.房间隔缺损
B.室间隔缺损
C.动脉导管未闭
D.法洛四联症
E.肺动脉狭窄
题型：单项选择题 A1/A2型题
| 完形填空。 | |||
| Time spent in a bookshop can be enjoyable. If you go to a __1__ shop, no assistant (营业员) will come near to you and said, "Can I help you?" You __2__ buy anything you don't want. You may try to find out __3__ the book you want is. But if you fail, the assistant will lead you there and then he will go away. It seems that he is __4__ selling any book at all. There is a story which tells us about a good shop. A medical (医学的) student __5__ a very useful book in the shop, __6__ it was too expensive for him to buy. He couldn't get it from the library, either. So every afternoon, he went there to read __7__ at a time. One day, however, he couldn't find __8__ from its usual place and was leaving when he saw an assistant signing (示意) to him. To his surprise, the a  ssistant pointed to the book __9__ , "I put it there so as not to be sold out, " said the assistant. Then he __10__ the student to go on his reading. | |||
| ( ) 1. A. good ( ) 2. A. shouldn't ( ) 3. A. what ( ) 4. A. surprised at ( ) 5. A. bought ( ) 6. A. but ( ) 7. A. little ( ) 8. A. the book ( ) 9. A. in a shop ( ) 10. A. left | B. bad B. needn't B. which B. not surprised at B. found B. and B. a little B. the shop B. in his hand B. let | C. cheap C. mustn't C. where C. interested in C. read C. so C. few C. the assistant C. in a corner C. helped | D. expensive D. can't D. when D. not interested in D. took D. or D. a few D. the shopkeeper D. in his pocket D. taught |