问题
单项选择题
卵磷脂中含有
A．胆碱
B．乙醇胺
C．磷脂酰甘油
D．丝氨酸
E．肌醇
答案
参考答案：A
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卵磷脂中含有
A．胆碱
B．乙醇胺
C．磷脂酰甘油
D．丝氨酸
E．肌醇
参考答案：A
An analyst does research about security market indices and gathers the following information about market-capitalization-weighted index consisting of the shares of three companies:
| Company | Beginning Share Prices | Ending Share Prices | Dividends Per Share | Shares Outstanding |
| A | $26 | $21 | $1.60 | 300 |
| B | $51 | $46 | $2.10 | 300 |
| C | $11 | $13 | $3.10 | 400 |
A. -16.55%
B. -8.00%
C. 0.55%