题目内容

下面关于买人期权和卖出期权的说法正确的是()。

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证券发行的()不能决定流通市场的规模和运行。

NASDAQ的中文全称是()。

These studies will yield valuable lemons ________.

A. in which to save lives and protect property
B. how to save lives and protect property
C. in how to save lives and protect property
D. about those to save lives and protect property

________ exposure to dirty air can cause people suffer from some diseases.

A. Raised
B. Prolonged
C. Expanded
D. Enlarged

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