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问题 选择题

下列实验操作正确的是（　　）

A．蒸发液体时，在蒸发皿下面垫上石棉网

B．为加快过滤速度，用玻璃棒在过滤器内搅拌

C．将试管夹从试管底部往上套，夹在试管的中上部

D．用镊子小心地将块状固体粉末投入垂直放置的试管中

答案

答案：C

填空题

2009年6月16日，巴西、俄罗斯、印度、_______“金砖四国”领导人会晤在俄罗斯叶卡捷琳堡举行，这是“金砖四国”领导人首次举行正式会晤。

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单项选择题

An analyst does research about capital asset pricing model and gathers the following information:

Estimated rate of return for a stock 12.0%
Expected rate of return for the market risk premium 9.5%
Risk-free rate of retum 3.5%
If the covariance of the returns on the stock with the returns on the market portfolio is equal to the variance of the returns on the market portfolio, the analyst's most appropriate conclusion is that the stock is:（）

A. overvalued.

B. properly valued.

C. undervalued because the required rate of return for the stock is greater than 9.5%.
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