企业投资可以分为广义投资和狭义投资，狭义的投资仅指（）
A、固定资产投资
B、证券投资
C、对内投资
D、对外投资
参考答案：D
收盘价高于开盘价时，则开盘价在下收盘价在上，二者之间的长方柱用红色或空心绘出，称之为（）。
A.阳线
B.阴线
C.上影线
D.下影线
An analyst does research about probabilities of a fund and an index. The fund underperforms the index, given the index return is positive is 0.45. The fund underperforms the index and the index return is positive is 0.20. If the two events "the fund underperforms the index" and "the index return is positive" are independent, the probability that the fund underperforms the index or the index return is positive is closest to:（）
A. 0.44
B. 0.69
C. 0.89
