统计地图用于表示（） A.某现象的内部构成 B.各现象的比较 C.某现象的地理分布

对表sc(学号C(8)，课程号C(2)，成绩N(3)，备注C(20))，可以插入的记录是( )。

A．(’20080101’，’cl’，’90’，NULL)

B．(’20080101’，’cl’，90，’成绩优秀’)

C．(’20080101’，’cl’，’90’，’成绩优秀’)

D．(’20080101’，’cl’，’79’，’成绩优秀’)

第二节 根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项多余选项。（共5小题；每小题2分，共10分）

A: Hello! This is Li Mei Calling form Jilin. May I speak to Carla?

C: Just a moment, please.   小题1: 

B: Hello?

A: Hi, Carla! This is Li Mei calling from Jilin. How are you?

B: Oh, hi, Li Mei! How nice to hear your voice! I’m fine, thank you.

A: Thank you so much for giving me such a lovely time in Trindad.

B:   小题2: I hope you can come again some day!

A: I’d love to! I wonder, though, if you are interested in visiting me during the Spring Festival this year. 小题3: 

B: Oh, I’d love to, but I don’t know if I will be free then. What time of year is it?

A:   小题4: and this year it’s at the beginning of February.

B: I’d love to come. I’ll try to find out if I can take off work then. It’s very kind of you to invite me!

A: Oh, don’t mention it! I hope you can come! Say hello to Hari for me! I hope he can come to China with you.

B: That would be fun! Thanks a lot for calling!   小题5: 

A: OK, great! Have a good day!

B: Thanks, you too, bye!

A: Bye!

人体内的淀粉酶是

A．α淀粉酶

B．β淀粉酶

C．γ淀粉酶

D．A和B

E．A和C

由一系列蛋白激酶的酶促级联反应，将胞外信号传递到细胞核内的为（）

A.细胞因子信号转导通路

B.NF-κB信号通路

C.MAPK信号通路

D.TGF-β信号通路

E.Wnt信号通路

简述透析低血压及其临床表现。