Question

A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below l6℃. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover，these areas would reflect more heat into the atmosphere，warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns，potentially causing certain natural disasters all over the world.

In the past hundred years，humans have begun destroying rainforests in search of three major resources（資源）：land for crops，wood for paper and other products，land for raising farm animals. This action affects the environment as a whole. For example，a lot of carbon dioxide in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.

There are two main reasons for this. Firstly，when people cut down trees，generally they can only use the land for a year or two. Secondly，cutting large sections of rainforests may provide a good supply of wood right now，but in the long run it actually reduces the world’s wood supply.

Rainforests are often called the world’s drug store. More than 25％ of the medicines we use today come from plants in rainforests. However，fewer than l％of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.

1.Rainforests can help to adjust the climate because they      .

A．reflect more heat into the atmosphere

B．bring about high rainfall throughout the world

C．rarely cause the temperature to drop lower than l6℃

D．reduce the effect of heat from the sun on the earth

2.What does the word “this” underlined in the third paragraph refer to?

A．We will lose much more than we can gain.

B．Humans have begun destroying rainforests.

C．People have a strong desire for resources.

D．Much carbon dioxide comes from burning rainforests.

3.It can be inferred from the text that      .

A．we can get enough resources without rainforests

B．there is great medicine potential in rainforests

C．we will grow fewer kinds of crops in the gained land

D．the level of annual rainfall affects wind patterns

4.Which of the following statements is TRUE?

A．Losing the rainforests has caused natural disasters all over the world.

B．Cutting rainforests will help increase the world’s wood supply in the future.

C．Rainforests can’t provide medical cures for diseases at all

D．Rainforests helps to control the temperature and adjust climate for humans.

5.What might be the best title for the text?

A．How to Save Rainforests

B．How to Protect Nature

C．Rainforests and the Environment

D．Rainforests and Medical Development

 

Answer 1

【答案】

1.D

2.A

3.B

4.D

5.C

【解析】

試題分析：本文敘述了熱帶雨林在人們生活中的重要作用，它們能吸收太陽光調節地球上的溫度，如果沒有它們人類會得疾病，給人類帶來大的災難，并且它們還能提供一些藥用的植物藥材，來為人類治病，因此，我們要保護熱帶雨林，不要濫墾濫伐。

1.細節理解題。根據Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate.熱帶雨林有一個很大的影響對于世界環境,因為他們能吸收來自太陽的熱量,調節氣候。故選D。

2.詞義猜測題。根據People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.故選A。

3.推理判斷題。根據More than 25％ of the medicines we use today come from plants in rainforests. However，fewer than l％of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.熱帶雨林里有很多的藥用植物供我們開采利用，故選B。

4.細節理解題。根據Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover，these areas would reflect more heat into the atmosphere，warming the rest of the world. 熱帶雨林能夠控制溫度調節氣候，故選D。

5.標題歸納題。根據全篇短文的內容來看主要說的是熱帶雨林和環境，故選C。

考點：環保類短文閱讀。

點評：細節事實理解題主要考查考生對文章中某一些特定細節或文章的重要實事的理解能力。它一般包括直接理解題和語義理解題兩種。直接理解題的答案與原文直接掛鉤，從閱讀材料中可以找到。這種題難度低，只要學生讀懂文章，就能得分，屬于低層次題。而語義理解題須將題目信息與原文相關信息進行語義上的轉換才能得出結論。這類題目要求考生能理解原文中某個短語或句子的含義，從而找到與答案意思相同的詞語和句子。