在津液的代谢过程中,“散精”功能依靠的脏是()。
A.脾
B.胃
C.肺
D.肾
E.心
参考答案:A
互质的两个数不一定是质数,但两个不同的质数一定互质.______.
Do you think the problem is ______? If you think hard, you'll find it ______ to work out. [ ]
A. hard; easy
B. easy; hard
C. hardly; easily
D. hard; easily