问题 选择题

下图为某反应的微观示意图,不同的球代表不同元素的原子。下列说法中错误的是

A.该反应的反应物可能属于氧化物

B.不考虑反应条件时,该图示可以表示双氧水制取氧气的反应

C.该反应类型为分解反应

D.该反应生成物都属于化合物

答案

答案:D

题目分析:由图可知,反应物是一种由两种元素组成的化合物,可能是氧化物;生成物是一种单质和一种由两种元素组成的化合物,可能是氧化物,A正确,D错误;过氧化氢分解生成水和氧气,符合该图,B正确;反应物是一种,生成物是两种,符合分解反应一变多的特点,C正确。故选D。

阅读理解

  Educating girls quite possibly produces a higher rate of return than any other investment(投

资)available in the developing world.Women’s education may be an unusual field for experts On economy(经济),but improving women’s contribution to development is actually as much all economic as a social business.And economics provides an explanation for why so many girls are

deprived of an education.

Parents in low-income countries fail to invest in their daughters because they do not expect them to make all economic contribution to the family:girls grow up only to marry into somebody

else’s family and bear children.Girls are thus seen as less valuable than boys and are kept at home to do housework while their brothers are sent to school.Ignoring women’s education is therefore in a bad circle.

An educated mother, on the other hand, has greater earning abilities outside the home and faces an entirely different set of choices.She is likely to have fewer but healthier children and can insist on the development of all her children, making sure that her daughters are given a fair chance.The education of her daughters then makes it much more likely that the next generation of girls,as well as of boys,will be educated and healthy.The bad circle is thus changed into a good

circle.

Educating women has great social benefits and great economic advantages as well.Most obviously, there is the direct effect of education on the wages of female workers.Wages rise by 10 to 20 per cent for each additional year of schooling.Such big returns are impressive by the standard of other available investments,but they are just the beginning.Educating women also has a significant effect on health practices, including family planning.

63.The author argues that educating girls in developing countries is          .

A.troublesome                  B.labor-saving          C.rewarding         D.expensive

64.The author believes that a bad circle can turn into a good circle when         .

A. women care much more about education

B. girls can gain equal access to education

C. a family has fewer but healthier children

D. parents can afford their daughters' education

65.What does the underlined phrase“deprived of”mean in Paragraph One?

A.supplied with         B. included in               C.kept away from    D.devoted to

66.The passage mainly discusses          .

A. unequal treatment of boys and girls in developing countries

B. the potential earning power of well-educated women

C. the major contributions of educated women to society

D. the economic and social benefits of educating women

单项选择题 A1型题