尿黑酸症缺乏()。
A.转氨酸
B.对羟苯丙酮酸氧化酶
C.苯丙氨酸羟化酶
D.尿黑酸氧化酶
E.酷氨酸酶
参考答案:B
—Whose shirt is this?
—It ______ be Li Lei’s. It is too big for him.
A.could
B.must
C.might
D.can’t