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【单选题】
免疫球蛋白的结构是由A.
二条相同的重链组成
B.
二条多肽链组成
C.
二硫键连接的二条相同重链和二条相同轻链组成
D.
二硫键连接的一条重链和一条轻链组成
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举一反三
【单选题】It can be known from the passage that ______.
A.
some parents think that a foreign language is useless in the states
B.
the students are strongly against learning a foreign language as a course requirement
C.
the lack of foreign language teaching has led to a storm of public anger
D.
students needn't know a foreign language to enter a college
【简答题】Mother Teresa was born in Yugoslavia, on August 27 th , 1910. She attended the government school near her home until she was eigh. At that time, some doctors and nurses from Yugoslavia were workin...
【简答题】1910 is the year. The revolution began then.
【单选题】1073年,格里高利七世当选教皇,采取了一些列的改革措施,试图恢复早期教会的纯洁性,教皇的改革引发了与下列哪位君主的冲突。
A.
神圣罗马帝国皇帝亨利四世
B.
法国皇帝腓力四世
C.
英王查理一世
D.
拜占庭皇帝查士丁尼
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