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问题 选择题
有理式
1
a
、
b
3
、
2
π
、y+
1
x
、
2x
x
、
m-n
m-n
中分式的个数为（　　）
A．3B．4C．5D．6
答案

b
3
，
2
π
，的分母中均不含有字母，因此它们是整式，而不是分式．

1
a
、y+
1
x
、
2x
x
、
m-n
m-n
中分母中含有字母，因此是分式．

故选B．

填空题

Questions 33-38


Complete the summary below.
Choose

NO MORE THAN TWO WORDS

from the passage for each answer.
Write your answer in boxes 33-38 on your answer sheet.
75 years later, Benjamin’s assertion seems especially (33) . Nowadays anyone can give remarks on an online story. Anyone can hear two songs and post his own mash-up. Anyone can engage in a Twitter conversation with Kanye West. It is (34) that the Web and (35) have further leveled the stratified world of the fine arts, and though Rose never references Benjamin, it’s tough to read The Art of Immersion as anything but the (36) of this process, the last boundary of art’s (37) . But Rose thinks that firstly our desire to entirely lose ourselves in a (38) has sent directors on a grail quest for the holodeck.
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单项选择题 B1型题

脐带砂炒的目的是（）

A.缓和寒滑之性

B.降低毒性

C.增强消食健脾作用

D.增强健脾止泻作用

E.矫臭矫味
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