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问题 解答题

某体育用品厂，原来生产一种健康器的成本是450元，零售价是580元．现在经过改造以后生产成本下降20%，而利润要比原来再增加10%，那么现在零售价应定为多少元？

答案

（580-450）×（1+10%），

=130×1.1，

=143（元）；

450×（1-20%）+143，

=450×0.8+143，

=360+143，

=503（元）；

答：现在零售价应定为503元．

选择题
设x，y，z∈（0，+∞），a=x+
1
y
，b=y+
1
z
，c=z+
1
x
，则a，b，c三数（　　）
A．至少有一个不大于2B．都小于2
C．至少有一个不小于2D．都大于2
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完形填空

VII. 语法填空 (共10小题；每小题1分，满分10分)

The break-up of a relationship can mean sleepless nights, problems concentrating, loss of appetite, even depression. Every person reacts ­­   99    the crisis differently. “One can’t expect to function normally in the first period of

100    separation,” says German psychotherapist Doris Wolf, author of a book on how to deal with a break-up. “Even if you are someone    101    has kept your feelings under control you can experience emotions as never before,” says Wolf,    102    (point) out that men and women ­­   103    (general) react differently. Men tend to suppress­­（忍住；控制）   104    pain by working, or with a new relationship, or alcohol. Women, on the other hand, sometimes suffer from depression, fear of the future, or guilty feelings. In contrast to men, women,  ­­ 105   , often have a good friend who ­­   106    (listen), give comfort or advice. That, says Wolf, is important, because anger, ­­   107    (s­­ad) and frustration need to be expressed. One will feel much ­­   108   (relieve) after doing so.
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