差价税随着国内外价格差额的变动而变动，所以是一种（）关税。
参考答案：进口附加
— Now more and more Chinese senior students are applying for admission to
American universities through SAT.
—____.But taking an SAT may cost one more than 10,000 yuan.
A．I hope so
B．Not really
C．That’s the case
D．That sounds reasonable
下列仪器中不能用作反应容器的是（ ）
A．烧杯
B．滴瓶
C．量筒
D．集气瓶
