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问题 单项选择题

与CD4+T细胞活化第二信号产生密切相关的膜分子之间的作用是

A．CD40与CD40L之间的作用
B．CD8与MHCⅠ类分子之间的作用
C．CD4与MHCⅡ类分子之间的作用
D．CD28与B7分子之间的作用
E．TCR与CD3分子之间的作用

答案

参考答案：D

阅读理解
Here is a report(成绩单) of the students’ English competition. Find the right answers to the following questions.
Items
Group One
Group Two
Group Three
Group Four
1.Answer correctly
67
71
76
78
2.Answer quickly
75
80
79
62
3.Answer humorously(幽默地)
69
68
81
77
4.Speak freely
81
83
84
85
5.Speak clearly
88
86
83
86
6.Speak loudly
90
93
91
91
7.Have good manners
79
74
75
79
8.Co-operate well
82
63
88
84
Average(平均数)
79
77
82
80
小题1:______ is the most humorous of the four groups?
A. Group One  B. Group Two  C. Group Three
小题2:Group Two spoke as _____ as Group Four.
A. clearly  B. quickly  C. freely
小题3:Group Two did worst in “______”.
A. speak freely  B. have good manners  C. co-operate well
小题4:In answer correctly, Group Three got _____ more marks than Group One.
A. 4  B. 5  C. 9
小题5:According to the report, which of the following is NOT true?
A. Group Three is the winner of the competition.
B. Group One did as well as Group Four in “Answer quickly”.
C. All groups did best in “Speak loudly” of all the items.
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单项选择题

治疗带下过少血枯瘀阻证，应首选的方剂是（）

A.左归丸

B.右归丸

C.四物汤

D.小营煎

E.六味地黄丸
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