问题 单项选择题

关于具有免疫作用的蛋白质的叙述,错误的是()。

A.血浆中具有免疫作用的蛋白质是免疫球蛋白

B.免疫球蛋白分为IgG,IgA,IgM,IgD,IgE五大类

C.补体也是一类球蛋白,具有免疫作用

D.补体是一种以酶原形式存在的蛋白水解酶体系

E.α、β和γ区的球蛋白几乎都是免疫球蛋白

答案

参考答案:E

多项选择题
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TOKYO - Japan is considering plans to calm tensions(紧张)with China by acknowledging(承认) Chinese claims to the disputed islands in the East China Sea, while maintaining its own position, Kyodo News cited sources as saying on Tuesday.

The report said that the plans would allow Japan, without changing its long-held position, to compromise a little with China, which has called on Tokyo to acknowledge the existence(存在) of a dispute(冲突)over the Chinese Diaoyu Islands, referred to as Senkaku Islands in Japan.

Japan has refused to rescind its recent purchase(购买) in mid-September of three of the five Diaoyu islands from a so-called private Japanese owner, which the government says was meant to maintain(继续)the uninhabited islands in a stable manner, despite China's strong protest.

It remains uncertain, however, whether China would be encouraged by the Japanese step to improve the tensioned ties, said Kyodo.

小题1:The passage may come from___________.

A.a magazine

B.a newspaper

C.a textbook

D.a map小题2:From the passage we can know________.

A.Japan will give in.

B.China is against Japan’s purchase of Diaoyu islands.

C.The problem between China and Japan has been settled.

D.China is the owner of Diaoyu islands.小题3:What does the underlined word mean?

A.agree

B.give up

C.compete

D.change小题4:What is the writer’s attitude?

A.He supports China.

B.He supports Japan.

C.He doesn’t have his own attitude.

D.He dare not show his attitude.