单项选择题

Their income increased by 21 percent over that of the previous year.

A．他们的收入比前年增加了百分之二十一。
B．他们的收入增加到前年的百分之二十一。
C．他们的收入比上一年增多到百分之二十一。
D．他们的收入比上一年增长了百分之二十一。

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热门试题

单项选择题

Had she found the right buyer, she would have sold the house.

A．只有找到了正式的买方，她才能售出房屋。
B．要是找到了合适的买方，她就会把房屋售出了。
C．如果找到了合适的买方，她就已经把房屋售出了。
D．她已经找到了正式的买方，并会把房屋售出。

单项选择题

Why does Dr. Johnson think that the present system is unfair？（）

A．Husbands are paying the social security taxes for their wives.
B．Women working at home can't get social security.
C．Bosses refuse to pay part of the taxes for female employees.
D．Full-time housewives are required to pay social security taxes.