题目内容
Even entry-level sales positions demand previous sales experience, especially the experience selling in the healthcare industry.
查看答案
搜索结果不匹配？点我反馈
更多问题
Looking at the engineering solution first, a lot of my research concentrates on what happens to wetlands when you build dams in river basins, particularly in Africa. The ecology of such areas is almost entirely driven by the seasonal regime of the river—the pulse of the water. And the fact is that if you build a dam, you generally wreck the downstream ecology. In the past, such problems have been hidden by a lack of information. But in this century, governments will have no excuse for their ignorance.
The engineers' ability to control water flows has created new kinds of unpredictability too. Dams in Africa have meant fewer fish, less grazing and less floodplain(泛滥平原) agriculture, none of which were anticipated. And their average economic life is assumed to be thirty years. Dams don't exist for ever, but what will replace them is not clear.
The challenge for the next decade is to find new means of controlling water. Although GM technology will allow us to breed better dry-land crops, there is no market incentive for companies to develop crops suitable for the micro-climates of the Sahel and elsewhere in Africa. Who is going to pay for research on locally appropriate crops in the Third World？
This brings us to the key issue in any discussion of water: money. To talk about a water crisis covers difficult problems such as poverty. In the next decade every household in Britain will have a water meter, and we will pay for what we use just as we do for gas or electricity. That can be resolved and a similar system will eventually be adopted across Europe and the US. But consider the problems of water supply in Mexico City or Delhi. If you're rich, you drink mineral water and may even have a swimming-pool—yet millions in such cities can't get safe drinking water. There is a coming water crisis which is one for the poor.
The word "premise"(Para. 1) probably means "______".
法律体系是指一国的全部现行法律规范，按照一定的标准和原则，划分为不同的()而形成的内部和谐一致、有机联系的整体。
A．He doesn't write well enough.B．He is not a professional writer.C．He hasn't got any p
A．It will pay more than the present one.B．It will offer a bigger office.C．It will requ
微信支付 
支付宝支付