D) underground water pollution
58. In the first paragraph scientists express the idea that ______.
A) clean water is no longer available for people in Europe
B) there will always be enough water for everyone
C) the water problem will soon be resolved in the twenty-first century
D) many more people may soon. be without clean water
59. One reason for water shortage is that ______.
A) people in Europe dont turn off their taps
B) people drill too many wells and pollute them
C) the population has been continuously rising
D) there is not much underground water
60. In Weldon Spring, people found ______.
A) chemicals in well Water B) many sources of surface water
C) more aquifers than other places D) chemicals in the bomb factory
61. We can infer from this passage that industry, farming, and waste are ______.
A) polluting all aquifers in the United States
B) minor sources of underground water pollution
C) causing problems in bomb factories
D) the three main sources of underground water pollution
参考答案:
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