| Women earn less than men do. For
example, in 1998 the hourly wages of women in the U. S. were 26% less than those
of men. The gap between male and female incomes varies with age. The gap between
the labor incomes of young women and young men varies. It’s also clear that jobs
in which women are concentrated pay less. The larger the number of workers who
are women in ran industry, the lower the average wages. Why do women earn less than men do Can the differences be explained by the fact that women are looked down upon If so, the government has to intervene(干预), to force the employers to pay equal wages to equal jobs. However, there is no agreement among economists about the causes of the gap. One view argues that women, on the average, have chosen low-paying jobs in which workers enjoy the freedom of entering and leaving the lab A. there are more than enough women in the labor force B. women have more freedom in selecting jobs C. women are only provided with low-paid jobs D. women are less experienced than men [填空题]Mr Zidane earns less than Michael Jordan.
[单项选择]
How many positive prime numbers are less than the integer n ？（） A. 条件（1）充分，但条件（2）不充分. B. 条件（2）充分，但条件（1）不充分. C. 条件（1）和（2）单独都不充分，但条件（1）和条件（2）联合起来充分. D. 条件（1）充分，条件（2）也充分. E. 条件（1）和条件（2）单独都不充分，条件（1）和条件（2）联合起来也不充分. [单项选择]Researchers found that teens who slept less than 6.5 hours a night were 2.5 times more likely than those who slept longer to have（）blood pressure.
A. alternated B. accelerated C. elevated D. startled [填空题]Substances with pH values less than 7 are alkaline.
[单项选择]How many positive whole numbers less than or equal to 50 are NOT equal to squares of whole numbers
A. 9 B. 15 C. 43 D. 44 E. 45 [单项选择]Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the world"s population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis.
But that doesn"t have to be the outcome. Water shortages do not have to trouble the world—if we start valuing water more than we have in the past. Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want.
Instead, for all uses except the domestic demand of the poor, governments should price water to reflect its actual value. This means charging a fee for the water itself as well as for the supply costs.
Governments should also protect this resource by providing water in more economically and environmentally sound ways. For example, often the cheapest way to provide irrigation water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions and pumping it to nearby cropland.
No matter what steps governments take to provide water more efficiently, they must change their institutional and legal approaches to water use. Rather than spread control among hundreds or even thousands of local, regional, and national agencies that watch various aspects of water use, countries should set up central authorities to coordinate water policy.The author says that in some hot and dry areas it is advisable to ______.
A. build big lakes to store water B. construct big pumping stations C. build small and cheap irrigation systems D. channel water from nearby rivers to cropland 我来回答: 提交
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