The writer advises those who hesitate to sell their stocks for money to
A. sell unless the market goes up.
B. buy more stocks during a bull market.
C. wait for the long haul.
D. sell out as soon as possible.
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投资者融资买入证券或融券卖出时,其融资融券保证金比例不得低于30%。()
It can be inferred from the text that the biggest losers are those who
A. jump off the sinking ship while sailing on the sea.
B. drown in the water in the same way as the others.
C. make mistakes in spite of the awareness of danger.
D. keep the stocks when their value approaches zero.
肾素释放的原因是()。
A. 血清钾浓度降低
B. 血容量增多
C. 动脉血压升高
D. 交感神经兴奋
E. 血清Na+浓度升高
被誉为现代经济法和竞争法产生的标志的是《威尔逊法》。()