下列氨基酸属于非必需氨基酸的为()
A.赖氨酸
B.甘氨酸
C.蛋氨酸
D.缬氨酸
E.色氨酸
参考答案:B
解析:考查人体非必需氨基酸所包含的氨基酸类别。
When we were young, every evening my brother and I ______ stay at home waiting for our mother.
A.would
B.might
C.should
D.could
※ [25~26] . ( 3 )
.
A. .
B. .
C..
D.