失眠治疗好转后,又复发,其原因是()。
A. 服药
B. 长期体力活动太少
C. 长期体力活动太少和精神负担太重
D. 精神负担太重
___ he got out of the car, he was given some flowers.
A. Until
B. As soon as
C. Before
D. If
下述哪一种情形会使总收入增加?()
A. 价格下降且需求缺乏价格弹性
B. 价格下降且供给富有弹性
C. 价格上升且需求缺乏价格弹性
D. 价格上升且需求富有价格弹性
Are you sure you don‘t have ___ advice to give me?I really need ___.
A. any, any
B. some, any
C. any, some
D. some, some