China has input several billion yuan of money to stop the dirty water waste on the upper a

China has input several billion yuan of money to stop the dirty water waste on the upper and middle area of the Pearl River from polluting the lower reaches of the river, especially the Macao Spe­cial Administrative Region．
The Guangxi Zhuang Autonomous Region in the upper and middle reaches of the Pearl River has been rapidly urbanized（城市化）and industrialized in recent years, leading to a rise in the amount of urban rubbish to the damage of the land, rivers and atmosphere．
Refuse dumps and special plants in most cities treat rubbish to make it harmless, with 5,800 tons of wastes being burnt, buried or made into fertilizers on a daily basis．
He Suping, a woman engineer with the water re­sources department in Guangxi said, it is imperative for the autonomous region to treat sewage wastes to protect the area’s Karst terrain（喀斯特地形）and rain water which brings contact between groundwater and surface water, making groundwater more easily polluted．
The Xijiang River, a branch of the Pearl River which runs from Guangxi to neighboring Guangdong Province, provides fresh water for a number of river­side cities such as Macao, Zhuhai, Zhongshan and Zhaoqing, so Guangxi must begin to treat rubbish quickly to protect the water sources, said Liu Chen, a senior engineer with the Ministry of Water Resources．
The government 2001—2006 plan to spend bil­lions of yuan to turn wastes harmless has been mainly provided by national debt payments and overseas in­vestment．So far wastes treatment projects have re­ceived a total of 400 million yuan（48 million US dol­lars）from national debts and 60 million yuan（7．22 million US dollars）from overseas loans（贷款）．
【小题1】The main idea of the passage is A．A large number of waterways have been polluted in China up to now．B．Guangxi and Guangdong have taken the lead in making water clean．C．China's rivers are badly in need of improve­ment．D．China is making efforts to reduce pollution of the rivers．【小题2】The main idea of the last paragraph is A．The government has no ability to afford the expenses of treating wastes．B．The government has a long-term plan to treat wastes．C．National debt payments and overseas investment are taking an important part in developing China's economy．D．A great deal of money is needed in dealing with wastes．【小题3】The basic reason why the amount of urban rubbish rises in Guangxi lies in ．A．the improvement of people’s living standardB．people’s wasting too muchC．urbanization and industrializationD．too many tourists’ coming【小题4】The word “imperative” here probably means ．A．unnecessaryB．importantC．easyD．unbelievableD

(答案→)D 解析：可联系答.案.网客服索取。

我明天再问问老师，叫他解释下这个问题