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【单选题】
在生理条件下，下列哪种氨基酸可为多种酶活性中心提供酸碱催化基团A.
天冬氨酸
B.
谷氨酸
C.
组氨酸
D.
赖氨酸
E.
丝氨酸
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反馈参考答案：
举一反三
【单选题】He stood up from the bench, _____his uniform, and made his way to the door.
A.
straightened
B.
straight
C.
strengthened
D.
strength
【简答题】He strengthened his ____ with France by marring the French king's daughter.
【单选题】He came to my class every week, but his attitude ________ that he was not realy interested in the subject.
A.
described
B.
strengthened
C.
suggested
D.
explained
【单选题】With his new play he has consolidated his position as the country's leading dramatist.
A.
strengthened
B.
won
C.
hardened
D.
united
【单选题】Contrary to early expectations his ratings and he soon had an audience of a million.
A.
raised
B.
soared
C.
strengthened
D.
intensified
【单选题】Her desire to make his son a pianist was so _____ that he spent nearly all his savings to buy him a piano.
A.
strong
B.
strength
C.
strengthen
D.
strengthened
【简答题】All the 7 letters are marked with 1)~7) in chronological order , and match the m with the detailed information . 1) 31 days to D-Day a . The blooming flowers strengthened his/her missing and he/she fe...
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