问题
选择题
My brother works _____ a magazine. He is a reporter. [ ]
A. in
B. at
C. for
D. as
答案
答案：C
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My brother works _____ a magazine. He is a reporter. [ ]
A. in
B. at
C. for
D. as
答案：C
缺失，设计
基牙，锤造固定桥修复。固位体和桥架用焊料焊接起来。