《报关员资格证书》由海关总署统一制定，在全国范同内有效。 ()
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How many girls are there in your class？
A. Yes, there are a lot of girls.
B. No, they aren't.
C. About 30 girls.
D. About 30 boys.
Classical economists argued that ______.
A. aggregate demand is inherently unstable in a capitalist economy
B. the aggregate supply curve is horizontal to the full-employment level of output in the economy
C. a laissez-faire policy of government is best in a capitalist economy
D. the unemployment rate is inversely related to the price level in the economy
某处长对下属做思想政治工作。引用孟子的话说：“鱼，我所欲也；熊掌，亦我所欲也，二者不可兼得，舍鱼而取熊掌也。”这是在教育下属（）。
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