儿童尿蛋白含量大于多少mg／d为异常
A．75
B．100
C．150
D．200
E．300
参考答案：C
Helen draws much better than _______ student in her class.
A．any other
B．the other
C．any
D．all the
简要说明种子休眠的类型和原因。
