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【简答题】
碱性氨基酸 有三种,它们分别是( ) 、赖氨酸(Lys) 和组氨酸(His)
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皮皮学刷刷变学霸
举一反三
【单选题】Peter ________ a baseball, but he doesn't ________ a baseball bat. [ ]
A.
have, has
B.
has, have
C.
have, have
D.
has, has
【简答题】The teacher doesn’t permit ________ in class. A) smoke B) to smoke C) smoking D) to have a smoke
【单选题】A 'Workaholic' works too much and usually forgets to have meals and go to bed. _____, he doesn't have good health. [ ]
A.
As a matter of fact
B.
As a whole
C.
As a result
D.
AS a rule
【单选题】Jason doesn't have to be made ___ because he always studies very hard.
A.
learn
B.
learning
C.
to learn
D.
learned
【简答题】如果层中的图片太大， 要设置超出部分照样显示， 则“溢出”选项中应选择 () 。
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