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问题 选择题

已知-x+3y=5，则5（x-3y）2-8（x-3y）-5的值为（　　）

A．80

B．-170

C．160

D．60

答案

∵-x+3y=5，

∴x-3y=-5，

∴5（x-3y）2-8（x-3y）-5

=5×（-5）2-8×（-5）-5

=125+40-5

=160．

故选C．

选择题

下表是某市三个3口之家某月的收入和支出情况（单位：元）

 月收入食品支出运动与娱乐支出其他消费支出储蓄
甲家庭2000800300500400
乙家庭60001500150015001500
丙家庭100002000400050000
分析上表，下列说法正确的是

A．该市居民收入差距较大，存在分配不公现象

B．甲家庭本月恩格尔系数最高，消费水平最低

C．乙家庭各项消费支出均衡，消费结构最合理

D．丙家庭支出大于收入，是由于收入预期最高
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单项选择题

This was one of my experiences (1) . When I was in my 30s, I was working for a large international company which had its head office in London. I was working in the (2) department.
The company had a training centre which was just outside London. Different courses were held there throughout (3) and I (4) go on one training course a year. These usually started (5) a Sunday evening and lasted six days.
Once I was (6) a week’s training course with about forty (7) sales people. I was in the bar on the Friday evening and suddenly a woman who was (8) behind the bar asked mea curious question. "I hope you don’t (9) my asking," she said, "but I’ve been (10) about it all week. Have you got a sister (11) Mary" The woman’s name was June. And she used to do various jobs at the training centre. She worked in the office, she organized all the food and drink for the centre and she worked in the bar at lunchtime and in the evening.
My answer (12) June’s question was "Yes", and June said, "I thought (13) . I met her last September when she was organizing a course here. " At that time, my sister was working for (14) company but in a different part of the country. That was (15) she came to be at the training centre.
(16) surprised me was how June guessed we were brother and sister. Three things made it even more (17) . First, she had met my sister six months before she met me. Second, they have about sixty new people every week at the training centre. So about one thousand five hundred people had (18) the centre in those six months. And (19) , my sister is married, so she doesn’t have the same family name as me.
We’re not (20) , but I guess we must look quite like each other.

A．that
B．it
C．such
D．so
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