下图为世界局部地区图，图中PQ线为昏线，当PQ线与极圈相切时，一艘轮船从里斯本出发将一批货物运往马赛港。据此回答1-3题。
1．当轮船经过M海峡时[ ]
A．顺风顺水
B．顺风逆水
C．逆风顺水
D．逆风逆水
2．此时，里斯本与马赛相比[ ]
A．自转线速度小
B．自转角速度大
C．正午太阳高度角小
D．白昼时间长
3．在N地有一大农场，该农场最适合种植[ ]
A．水稻
B．橄榄
C．牧草
D．棉花
1、A
2、D
3、C
The world’s population was about 6.5 billion in 2008. ___46___ three billion people ___47___ Asia now. That’s about half of the world’s population. China has the ___48___ population in the world, and about one fifth of the people in the world live in China. ___49___ the large population, there is ___50___ living space for each family. And it’s difficult for lots of people to find jobs. A large population also causes many ___51___ for ___52___ nation. For example, we are short ___53___ energy and water. Most cities are more ___54___ than before, and the traffic is much ___55___. The large population ___56___ a serious problem. So far, our government has taken many measures to control the population. One is know ___57___ the one-child policy. It has worked ___58___ in controlling China’s population. Thanks to the policy, China is developing ___59___ and people’s living conditions are improving rapidly. However, the population problem is ___60___ serious in China. We still have a long way to go.
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