问题 选择题

下列除(  ) 外都是科学观察的基本要求

A.只认真观察自己制造的有机物的生物

B.有耐心、有计划的、有目的的观察

C.全面细致地观察

D.观察时要积极思考,还要讨论交流

答案

答案:A

题目分析:科学观察可以直接用肉眼如观察鱼的运动,也可以借助放大镜(观察蚯蚓)、显微镜(观察细胞的结构)等仪器,或利用照相机、录音机、摄像机等工具,有时还需要进行测量,科学观察不同于一般的观察,要有明确的目的,观察时要全面、细致和实事求是,并及时记录下来,对于需要较长时间的观察,要有计划、有耐心,观察时要积极思考,还需要同别人交流看法,并进行讨论,所以此题答案为A。

点评:此题为基础题,知道观察的方法是解答此类题目的关键,观察法是对实验对象用肉眼或一些辅助仪器进行的观测。

单项选择题
单项选择题

Questions 6-10 are based on Passage Two:Passage TwoEducating girls quite possibly yields a higher rate of return than any other investment available in the developing world. Women’s education may be unusual territory for economists, but enhancing women’s contribution to development is actually as much an economic as a social issue. And economics, with its emphasis on incentives, provides guideposts that point to 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 an 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 kept at home to do housework while their brothers are sent to school- the prophecy becomes self-fulfilling, trapping women in a vicious circle of neglect.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, ensuring 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 vicious circle is thus transformed into a virtuous circle.Few will dispute that educating women has great social benefits. But it has enormous economic advantages as well. Most obviously, there is the direct effect of education on the wages of female workers. Wages rise by lo t0 20 percent 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 impact on health practices, including family planning.

What does the author say about women’s education ( )

A. It deserves greater attention than other social issues

B.It is now given top priority in many developing countries

C.It will yield greater returns than other known investments

D.It has aroused the interest of a growing number of economists