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【单选题】
五种免疫球蛋白的分类依据是()A.
H链和L链均不同
B.
V区不同
C.
L链不同
D.
H链不同
E.
链接H的二硫键位置和数目不同
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【单选题】do you of the sports shows? ——They’re interesting.
A.
How; think
B.
How; about
C.
What; like
D.
What; think
【多选题】What serious social problems have been spotted in the text?
A.
education
B.
social welfare
C.
housing problem for the young
D.
women's social status
【单选题】The females of our closest primate relatives, the chimpanzees, are not exactly paragons of sexual probity. A recent DNA study of behavior. in the forest of Africa’s Ivory Coast showed that despite the...
A.
chimps also live in a civilized community
B.
human beings are just similar to the chimps
C.
people understand chimps quite well
D.
the chimps and people live in similar societies
【简答题】please list the writing guide of establishing business relationship letter
【简答题】（）对坚持和发展中国特色社会主义具有决定性意义，我们必须坚持以（）为中心，坚持以（）引领经济发展新常态，破解发展难题，厚植发展优势，不断为坚持和发展中国特色社会主义奠定强大物质基础。
【简答题】Please give an outline of the procedures of checking in for tour guide.
【单选题】What is false according to the passage?
A.
So far social problems have not drawn any attention of either educators or socialists.
B.
Teachers and parents have not taught children by personal examples-nowadays.
C.
Troubles with feelings are also a kind of social problems.
D.
Only those children with profuse knowledge intelligently and socially can deal with the changing world.
【简答题】Please describe the guide theory of optical fiber.
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