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【单选题】
When deposits are federally insured, people no longer rush to withdraw their money if they______the financial condition of their bank.A.
become concerned about
B.
become concerned with
C.
become concerned in
D.
concern
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举一反三
【单选题】Which one of the following is NOT the reason for an overall lack of teaching Darwin's theory?
A.
Teaching of creationism diminishes teaching of evolution.
B.
Teachers are not required to teach Darwin's theory.
C.
teachers often leave out the teaching of evolution.
D.
Darwin's theory is denied as the central theory of biology.
【简答题】硫代乙酰胺试液与重金属反应的最佳pH值是( )。
【单选题】In motorships，there are two main circuits, _____.
A.
one salt water, one fresh water
B.
one salt water, one fuel
C.
one fresh water, one fuel
D.
one steam, one fuel
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