Many investors base their choice ( between bonds and stocks on comparing bond yields to ) the dividends available on common stocks.
A. between bonds and stocks on comparing bond yields to
B. among bonds and stocks on comparisons of bond yields to
C. between bonds and stocks on comparisons of bond yields with
D. among bonds and stocks on comparing bond yields and
E. between bonds and stocks on comparing bond yields with
选项明显的差距就是between and以及compare with,所以选了E,答案是C。麻烦老师讲解一下comparing和comparisons of的区别。
想问一个数学题,有一组数,问能否确定range?
1. mean is given
2. standard deviation is given
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解答:
ken@boost.org.cn老师
提问:
7/15寂静:所有员工都大于20岁. Of the 2000 employees, is the avg age at least 35?
1. 50% 员工是大于40岁
2. 25% 员工是大于65岁
这道题网上有C和E两种争论;我所不明白的点是:条件2中的25%是否包含在条件1的里面;我觉得答案应该是C。因为:35*2000=70000岁;(1)+(2)可得41*500+66*500+21*1000=74500>70000.不知道我的思路是否正确。谢谢老师的答疑!