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问题 选择题

下图为某遗传病的系谱图，有关判断正确的是

[ ]

A．该遗传方式不可能表示伴性遗传

B．致病基因一定位于X染色体上

C．Ⅱ3和Ⅱ4的基因型相同

D．Ⅱ3和Ⅱ4的基因型不同

答案

答案：C

选择题

在有氧呼吸过程中，进入细胞的氧将

①与氢结合生成水 ②与碳结合生成二氧化碳 ③在线粒体中被消耗 ④在线粒体与细胞质中被消耗[ ]

A．①④

B．①③

C．②③

D．②④
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单项选择题

Which of the following statements concerning security valuation is FALSE（）

A. Accounting methods may differ substantially between countries.

B. To value any security, you need to know the projected cash flows, their timing, and the required rate of return.

C. If the return on new investments is less than the return the firm is earning on its existing investments, the firm is considered a growth firm.
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