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问题 填空题
用换元法解分式方程x2+x+1=
2
x2+x
时，如果设y=x2+x，那么原方程可化为关于y的一元二次方程的一般形式是______．
答案

设y=x2+x，

则得y+1=

2
y
，

方程两边同乘以y，

整理得y2+y-2=0．

故本题答案为：y2+y-2=0．

补全对话，情景问答

补全对话。

A: Hi, Li Lei!    1   What have you beer doing these days?

B: I have been a member of the school volunteer project.    2  

A. Of course. But I don't know what I can do?

B:    3  

A: Playing the guitar.

B:    4  

A:    5   Thank you.

B: You are welcome.

A. Would you like to join us?

B. I haven't seen you for a long time.

C. Good idea.

D. What's your hobby?

E. Well, you could help coach a guitar team for little kids.
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单项选择题 A2型题

男性，68岁。12小时前因咳嗽而突然右下腹剧烈疼痛，右侧阴囊亦肿胀疼痛。右侧腹股沟区呈梨形隆起，不能回纳。行急诊手术治疗，术中发现嵌顿的肠管已坏死，应采取的手术方法是坏死肠段切除和（）

A.疝囊高位结扎术

B.无张力疝修补术

C.Bassini修补术

D.Halsted修补术

E.Ferguson修补术
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