题目内容

【题目】亚马孙流域形成了以高大乔木为主的雨林群落,其具有光合作用强烈、生物循环旺盛、生物生长迅速的优势。完成下列各题。

1有人说热带雨林是“长着森林的绿色沙漠”,其原因是

A. 热带沙漠气候,降水少,沙漠广布 B. 植物生长慢,养分被土壤吸收,受雨水淋溶

C. 雨林枯枝落叶多,分解慢 D. 高温多雨,养分遭受强烈淋洗丧失,土壤贫瘠

2下列属于热带雨林保护措施的有

①鼓励大规模开发雨林,从中获益②建立自然保护区③保护性的开发,发展生态旅游业④森林选择性采伐⑤提高公民环保意识

A. ①③④⑤ B. ②③④⑤ C. ①③④ D. ②③⑤

【答案】

1D

2B

【解析】

1有人说热带雨林是“长着森林的绿色沙漠”,其原因是高温多雨,土壤养分遭受强烈淋洗丧失,土壤贫瘠,D对。雨林植被位于热带雨林气候区,降水多,A错。全年高温多雨,植物生长快,养分被植被吸收,B错。雨林枯枝落叶多,但分解快,积累在土壤中的少,C错。

2属于热带雨林保护措施的有建立自然保护区,②对。鼓励大规模开发雨林,从中获益,不利于保护雨林,①错。保护性的开发,发展生态旅游业,③对。森林选择性采伐,减少植被破坏,利于保护雨林生态系统,④对。提高公民环保意识,利于雨林保护,⑤对。B对,A、C、D错。

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【题目】根据短文内容的理解,选择正确答案。 Sometimes called Amazonia, the rainforest of the Amazon River basin is the largest in the world. It stretches (延伸) across more than half of Brazil and parts of seven other South American countries (and French Guiana). With a land area of 2.7 million square miles, the Amazon rainforest is almost two thirds the size of the US.
Rainforests are important to the health of the entire planet. Often called "the lungs of the planet", the Amazon rainforest, with its rich plant life, stores carbon dioxide while giving out the oxygen we need to survive.
At one time, rainforests covered 14 percent of Earth's surface. Deforestation has reduced that figure to 6 percent today. Much of the loss has been in the Amazon.
Fortunately, over the years, Brazil has also become a world leader in rainforest preservation. A law called the Forest Code, originally passed in 1965, requires the Amazon's farmers to protect 80 percent of their land from farming. And democratic governments beginning in the early 1990s began to enforce it seriously.
Efforts to save the Amazon increased under President Luiz Inacio Lula da Silva (2002—2011). Brazil set aside about 150 million acres of the rainforest, an area about the size of France, for protection. Deforestation fell by 74 percent between 2004 and 2009.
Other countries of the Amazon have also done their parts. This year, Peru created a forest reserve about the size of California's Yosemite National Park.
(1)What is the size of the Amazon rainforest?
A.About the size of France.
B.Nearly half the size of Brazil.
C.Over half the size of the US.
D.About the size of seven South American countries.
(2)How much of the rainforest has been lost due to deforestation according to Paragraph 3?
A.6%.
B.Approximately 8%.
C.14%.
D.More than 50%.
(3)Which country contributes most to the preservation of the Amazon rainforest?
A.Peru.
B.Brazil.
C.The US.
D.French Guiana.
(4)What does the author feel about the situation of the Amazon?
A.Optimistic.
B.Moved.
C.Worried.
D.Uncertain.

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