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What does in PARAGRAPH 4 refer to? 查看材料
A.Students.
B.Conditions.
C.Undocumented immigrants.
D.Public colleges and universities.

A.Students.
B.Conditions.
C.Undocumented
B.
D.Public
C.

【参考答案】

B
解析:首先定位到划线词them在第四段中的位置,由于them是代词,代词是用来代替前面出现过的事物.所以关注......

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