凯恩斯对外贸易乘数理论认为在投资增加额和贸易乘数一定的情况下,贸易顺差越大,国民收入增加额()
A.越大
B.越小
C.不变
D.无法判断
参考答案:A
In the exam, the _________ you are, __________ mistakes you will make.
A.more careful; the fewer
B.more careful; less
C.careful; little
D.careful; few
小儿传染病发病率最高的年龄段是:()
A.新生儿期
B.婴儿期
C.幼儿期
D.幼童期
E.儿童期