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问题 选择题
已知sinα=
5
13
，α∈（
π
2
，
3π
2
），则tan（
π
4
+α）的值是（　　）
A．-
7
17
B．-
17
7
C．
7
17
D．
17
7
答案

∵sinα=

5
13
，α∈（
π
2
，
3π
2
），∴cosα=-
12
13
，∴tanα=
-12
5
，

∴tan（

π
4
+α）=
1+tanα
1-tanα
=
7
17
，

故选C．

单项选择题 A1/A2型题

尿素与尿素氮的关系为（）

A.1分子尿素氮含有2分子尿素

B.1分子尿素等于1分子尿素氮

C.1分子尿素含有2分子尿素氮

D.尿素就是尿素氮

E.二者没有任何关系
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听力题

根据短文内容和所给中文提示，写出空白处各单词的正确形式。每空限填一词。

Thank you for joining in CCTV’s Around the World show. Today, we are in a famous park in 56__________(法国). It’s winter now. it’s cold, but 57_________（晴朗的）. There are many people here. Some boys are 58_________(躺) on the 59____________(草地). Look at this group of girls.  They are 60____________ （穿）red clothes, and they are reading under a tree. Oh! There are some 61_______ (年轻的)foreigners in the park. They are taking photos with their 62_______（相机）. They think it’s really 63__________（放松的）. This is a 64_________ （相当）interesting place. 65___________（每个人） is having a good time.
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