属于神经垂体激素的是 （）
A.生长激素
B.卵泡刺激素
C.催产素
D.催乳素
E.孕激素
参考答案：C
You have worked all day. You _______ be tired. [ ]
A. must
B. can't
C. could
D. might
简答混铁炉燃气烧嘴的布置。
