不同区域形成的因素不同，区域特征相差也很大，结合“中国政区图”，完成1~3题。
1．甲区域和乙区域相比，气候的差异是[ ]
A．甲区域作物生长期较长
B．甲区域降水较少
C．乙区域大陆性较强
D．甲区域高温多雨
2．符合乙区域土地特点的是[ ]
A．广泛分布在此地区的水稻土是有机质含量较高的土壤
B．人口稠密，耕地较为集中
C．人均耕地高于全国平均水平
D．耕地中旱地所占比重大
3．丁省与丙省相比[ ]
A．劳动力资源丰富
B．陆地交通便捷
C．第一产业比重小
D．第三产业比重小
1．B
2．A
3．D
We sometimes call the lion “the king of the jungle (丛林)” because it is stronger and more dangerous than other animals. It can run faster than many animals and it can hunt (捕猎) the best. It is the highest animal in the 21 food chain (食物链).[ In the sea, the shark is one of the animals at the 22 of the food chain. It can swim faster than most other sea animals, and it can use its big teeth to eat them. What is at the top of the world’s food chain? 23 are! We are not the biggest or fastest, but we are the 24 We could not run faster than cheetahs (猎豹), so we 25 cars and now we can move the fastest. We could not 26 better than lions, so we invented guns (枪). Now we can hunt the best. People’s inventions are clever, but they can be dangerous, too. For example, people invented 27 , and now they make the air and rivers dirty. This can make 28 changes. Dirty rivers kill fish. Then bears cannot eat the fish and the bears die. If we kill one part of the food chain, 29 also die. Remember that we are a part of the food chain, so we are in danger too! If we protect animals, we are protecting 30 ! We should and we could do something for the world!
|
