单项选择题 A1/A2型题：腹股沟斜疝的特点之一为（） A.可同时有直疝存在 B.因为与睾丸下降有关，左侧较常见

题目：

腹股沟斜疝的特点之一为（）

A.可同时有直疝存在

B.因为与睾丸下降有关，左侧较常见

C.可在精索后方感到疝囊

D.一般疝内容物不能完全回纳

E.外环可扩大在2cm以上，疝块可堕入阴囊

答案：

参考答案：E

解析：凡疝囊从腹壁下动脉外侧的内环突出，向内、向下、向前斜行经过腹股沟管，再穿出皮下环并可进入阴囊者称为腹股沟斜疝。斜疝是最多见的腹外疝，发病率约占全部腹外疝的90%，或占腹股沟疝的95%。男性占绝大多数，右侧比左侧多见。腹股沟斜疝有先天性和后天性两种。前者的发病原因为腹膜鞘状突未闭，后者的发病原因除了腹股沟部有先天性缺损外，腹内斜肌和腹横肌的发育不全起主要作用。故答案应选E。

完形填空。
Many animals use some kind of “language”. They use signals(信号)and the signals have meanings. For example, when a bee(蜜蜂) has found some food, it goes 1 home. It is 2 for a bee to tell 3 bees where the food is by speaking to 4 ,but it can do a little dancing. This tells the bees where the food is and 5 it is. Some animals show how they feel by making sounds. It is not difficult to 6 . If a dog is angry, it barks(吠). Birds make several different sounds and 7 has its own meaning. Sometimes we humans make sounds 8 . We make sounds like“Oh!”or“Ouch!”to show how we feel about something or when we 9 something on our feet. We humans have languages. We have words. These words have the meaning of things,actions(行动), feelings or ideas. We 10 give each other information. Writing down words, we can remember what has happened or send messages to people far away.
( )1. A. out of ( )2. A. important ( )3. A. each other ( )4. A. it ( )5. A. how long ( )6. A. watch ( )7. A. each ( )8. A. in the same sound ( )9. A. put ( )10. A. could	B. on with B. difficult B. another B. him B. how far B. see B. every B. by different sounds B. drop B. are able to	C. away from C. necessary C. other C. them C. how many C. look C. all C. in the same way C. fall C. couldn’t	D. back D. impossible D. others D. themselves D. how old D. tell D. some D. by different ways D. set D. be able to