问题
选择题
My father _____ a new car. He _______ it very much. [ ]
A. have, 1ike
B. has, likes
C. has,1ike
D. have, likes
答案
答案：B
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My father _____ a new car. He _______ it very much. [ ]
A. have, 1ike
B. has, likes
C. has,1ike
D. have, likes
答案：B
已知A、B两只股票各种可能的预期收益率以及相应的概率如下表所示：
| 发生概率 | A股票预期收益率 | B股票预期收益率 |
| 0.4 | 30% | 40% |
| 0.4 | 12% | 10% |
| 0.2 | -5% | 3% |