3. 答案
C
解析
细节理解题。第五段提到But she faces competition from Lady Gaga, who according to media reports late last year intends to be the first when she performs one song in space in early 2017 on a Virgin Galactic flight.由此可知,她是一位歌手。
4. 答案
A
解析
推理判断题。去太空旅行的费用相当高,而查尔斯·西蒙尼去了两次,说明他富有;去太空充满了危险,判断他勇敢。所以选择A项。
About 5,000 children die each day due to preventable diseases such as cholera(霍乱) and dysentery (痢疾), which spread when people use unclean water for drinking or cooking. A lack of water for personal hygiene leads to the spread of totally preventable diseases like trachoma(沙眼), which has blinded some six million people.
Water troubles also trap many low-income families in a cycle of poverty and poor education — and the poorest suffer most from lack of access to water. People who spend much of their time in ill health, caring for sick children or collecting water at a distance averaging 3.75 miles a day are denying educational and economic opportunities to better their lives.
Agriculture is called the lion’s share of freshwater worldwide, soaking up some 70 percent, and industrial uses consume another 22 percent. Water areas have no political borders and nations don’t always work together to share common resources — so water can be a frequent source of international conflicts as well.
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