Which of the following is true according to the first two paragraphs？
A. The U. S. schools don"t want the parents know their plans for disasters.
B. Parents should push schools to make reasonable plans for disasters.
C. The U. S. schools have done too little to prepare for disasters.
D. Most U. S. parents do not know the disaster preparedness plan of their children"s schools.
查看答案
According to the second paragraph,
A. schools should do more in their disaster preparedness.
B. the government has been well prepared for disasters.
C. parents do not care about their children enough.
D. schools" former plans for disasters do not make sense at all.
It can be inferred from the second paragraph that
A. low-altitude clouds are the main causes of global warming.
B. increase of cloud cover can slow down the climate change.
C. global warming will increase cloud cover.
D. increase of cloud cover can speed up the global warming.
MM理论认为：在完善的资本市场条件下，股利政策不会影响公司的价值。公司价值是由公司投资决策所确定的本身获利能力和风险组合所决定，而不是由公司股利分配政策所决定。()
负债比率(资产负债率)越高，表明公司偿还债务的能力越差，反之，则偿还能力越强。()
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