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问题 选择题

下列物质中，氧元素以游离态存在的是（　　）

A．KClO3

B．O2

C．H2O

D．H2O2

答案

A、氯酸钾是化合物，氧元素以化合态存在，故错误．

B、氧气是氧的单质，氧元素只以游离态存在，故正确；

C、水为化合物，氧元素只以化合态存在，故错误；

D、双氧水是化合物，氧元素只以化合态存在，故错误；

故选B．

选择题

My grandmother is a doctor. She works in a _____________.[ ]

A. restaurant

B. school

C. hospital
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单项选择题

Given the following assumptions about a company’s financial estimates, calculate the P/E ratio, and determine whether the stock is undervalued or overvalued. Earnings retention rate at 40% Required rate of return of 12.5% Return on equity (ROE) of 11% , expected to remain constant Estimated earnings per share (EPS) for next year of $ 2.75 Current market price of $ 23.70 Which of the following statements is most correct The P/E ratio is:()

A. 7.41 and the stock is overpriced.

B. 7.41 and the stock is underpriced.

C. 7.41 and the stock is properly priced.
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