出现下列哪种情况时，应怀疑腹外疝发生绞窄（） A.疝突出后，停止排气排便 B.腹外疝

Snake dishes have become popular in recent years. Snake meat is often seen in restaurants. It seems that eating snakes is now in fashion, and if you ( A ) ___________ (not eat) any snakes yet, you’re considered out-of-date. But I wonder whether it is worth following.

Some people think that eating snake meat is good for their health. But these people don’t know that snakes usually eat mice and worms. Therefore, there are many parasites（寄生虫）found inside snakes’ bodies. ( B ) 它们可能对我们的健康有害。 Apart from this, we’re sorry to see that more snakes are being killed by a butcher’s knife. According to the newspaper, Shanghai Star, about 1,000 tons of snakes are eaten by people every year in China. In Shenzhen of Guangdong Province, sometimes as many as 10 tons of snakes are served on dinner tables in a single day. ( C ) If we still turn a blind eye to this, a vicious circle（恶性循环）will be created — if more snakes are eaten by people, the number of snakes will drop, and the number of mice will increase, which will result in a decrease in crop output. This will make more people hungry. Who wants to see such a tragedy?

( D ) Therefore, let’s not eat snakes any more! To protect the snakes is to protect ourselves.

小题1:用 ( A ) 处所给词的正确形式填空。 ________________________

小题2:将 ( B ) 处的句子翻译成英语。

___________________________________________________________________________________

小题3:将 ( C ) 处翻译成汉语。

__________________________________________________________________________________

小题4:改写 ( D ) 处的句子，句意不变。

Therefore, let’s ___________ ____________ eating snakes!

小题5:根据短文内容回答问题：

What will happen if people eat more snakes? ____________________________________________________

依据生命周期理论，完善的社会保障系统对居民消费产生什么影响？为什么？

患者，女，30岁。有风湿性关节炎病史。检查：心尖部可听到4级收缩期杂音，X线显示左心房、左心室增大。应首先考虑的心瓣膜病变是（）

A.二尖瓣关闭不全

B.二尖瓣狭窄

C.主动脉瓣关闭不全

D.主动脉瓣狭窄

E.肺动脉瓣狭窄

创伤性休克早期最常出现的酸碱失衡类型是

A．呼吸性碱中毒
B．代谢性碱中毒
C．代谢性酸中毒
D．呼吸性酸中毒
E．代谢性酸中毒合并呼吸性碱中毒

实验室现有四瓶失去标签的蔗糖溶液（编号ABCD），已知四瓶蔗糖溶液的浓度都不同。现利用半透膜袋进行渗透实验（装置如下图），一段时间后半透膜袋①和③变得胀硬，半透膜袋②萎缩。四种蔗糖溶液中浓度最低的是（）

A.蔗糖溶液A

B.蔗糖溶液B

C.蔗糖溶液C

D.蔗糖溶液D