【判断题】静脉因管腔大而壁薄,弹性和收缩力均比动脉差。
【单选题】What did P and S waves help scientists discover about the layers of the earth?
B.
Where earthquakes form.
D.
What purpose they serve.
【单选题】Did you know __ over there? [ ]
【多选题】题 根据《增值税暂行条例》规定,下列关于增值税专用发票开具时限的表述中,正确的有( )。
A.
采取交款提货结算方式的,增值税专用发票开具时限为收到货款的当天
B.
采取分期付款结算方式的,增值税专用发票开具时限为货物发出的当天
C.
采取托收承付结算方式的,增值税专用发票开具时限为货物发出的当天
D.
采取委托银行收款结算方式的,增值税专用发票开具时限为货物发出的当天
【单选题】What did the author constantly fight against while doing her Ph.D. and post-doctoral research?
A.
Lack of confidence in succeeding in space science.
B.
Unfair accusations from both inside and outside her circle.
C.
Peoples stereotyped attitude towards female scientists.
D.
Widespread misconceptions about nature and nurture.
【单选题】What did the researchers note according to the passage?
A.
The negative effects of all the positive posts by Facebook users.
B.
The positive effects of all posts by Facebook users.
C.
Feelings of misery and loneliness.
D.
Feelings of frustration and angry.