— your CDs?
—On the TV. [ ]
A. Were
B. Where's
C. Where are
D. What are
答案：C
性激素对下丘脑一垂体的反馈，正确的是（）
A.雌激素-负反馈，孕激素-正反馈
B.雌激素-正反馈，孕激素-负反馈
C.雌激素-负反馈，孕激素-负反馈
D.雌激素-正、负反馈，孕激素-负反馈
E.雌激素-负反馈，孕激素-正、负反馈
Instrumental leaders cultivate a more personal relationship.
