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【单选题】
能转变成去甲肾上腺素的氨基酸是A.
精氨酸
B.
谷氨酸
C.
甘氨酸
D.
酪氨酸
E.
蛋氨酸
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【简答题】经络学说中的“血海”，指的是
【单选题】The taller children should stand at the back _____ everyone can see.
A.
so that
B.
in order to
C.
so as to
D.
now that
【简答题】In only two decades Asian Americans have become the fastestgrowing U. S. minority. As their children began moving up through the nation schools, it became clear that a new class of academic achievers ...
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