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【单选题】
临床常用的酸蚀剂( )A.
10%～30%柠檬酸
B.
10%～15%磷酸
C.
30%～50%磷酸
D.
30%～50%醋酸
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反馈参考答案：
举一反三
【单选题】I'll try _____ the same mistake again. [ ]
A.
to not make
B.
not to make
C.
not making
D.
not make
【简答题】I'll try not to _____ too much of your time.
【单选题】—Have you got the information _____ you need to use for the report? —Not yet. But I'll try to find some on the Internet at once. [ ]
A.
which
B.
who
C.
what
D.
whose
【简答题】已知数列 的通项公式是 ,那么 108 是这个数列的第 项。
【单选题】As I felt very unhappy while doing an engineering internship at a top tech company, I think I'll try not to get stuck in corporate life.
A.
confused
B.
impressed
C.
miserable
D.
surprised
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