激素是由人体的 分泌的一些物质,虽然含量很少,但对人体的 和 等生命活动起着重要的调节作用。
内分泌腺;新陈代谢;生殖
A.车辆的刹车声
B.冲击钻发出的声音
C.优美的小提琴声
D.音响设备发出的震耳的歌声
Woman: Professor Smith, I really need the credits to graduate this summer. Man: Here in this school: the credits are earned, not given. Question: What do we learn from the conversation()。
A. The woman has to attend a summer course to graduate.
B. The man thinks the woman can earn the credits.
C. The woman is begging the man to let her pass the exam.
D. The woman is going to graduate from summer school.