Are they playing loudly ____________ quietly? [ ]
A. and
B. too
C. but
D. or
答案:D
哪种激素是甾体激素()
A.促肾上腺皮质激素
B.促甲状腺激素
C.肾上腺皮质激素
D.甲状腺激素
E.前列腺素