非营利组织的日常性采购的采购金额相对_________。
A.较多
B.较少
C.一般
D.量大
参考答案:B
We were told by our teachers that light________faster than sound.[ ]
A. travelled
B. has travelled
C. travels
D. will travel
能促进排卵的激素是()。
A、雌激素
B、促卵激素
C、孕激素
D、促黄体素