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范畴:人与自然 主题:植物研究 体裁:说明文 难度:★★★★ 建议用时:9分钟 评价: /4
Plants bring us fruit and vegetables. And they also give us the oxygen we need. But do you know enough about plants? The documentary The Green Planet shows the secret lives of plants that we have never seen before. Though they can't walk or talk, they act like animals in many ways.

Fighting
Plants fight against each other to live. In tropical forests, they fight for sunlight. The forest floor is like a battlefield. Only 2 per cent of the sunlight gets to it. A Monstera spreads its big leaves to reach sunlight. At the same time, a vine catches it to get a ride. But a balsa tree beats both of them because it grows faster.
Helping each other
Plants also help each other and even communicate. In deserts, the roots of Euphrates poplars are connected. If a tree finds water, it'll share it with others through the roots. Studies also show plants use things in the soil as a way to "talk" to each other. If a tomato plant gets a leaf disease, it will tell nearby plants about it.
Defending
Each kind of plant has its own ways to protect itself. Some trees make poisonous(有毒的) sap. Some flowers give off a bad smell. The documentary shows us a corpse flower(尸花). It grows a metre wide. Looking closely, you will find it has "teeth". Its petals are the colour of blood. More dangerously, it gives off a pungent(气味强烈的) smell to keep animals away.
()1. Why does the writer call the forest floor a battlefield?
A. Because plants there meet different kinds of animals.
B. Because plants there need plenty of water to drink.
C. Because plants there have no ways to protect themselves.
D. Because plants there fight with each other for sunlight.
()2. How does the corpse flower stop animals from coming close?
A. It asks other plants for help.
B. It catches a vine to get a ride.
C. It gives off a bad smell.
D. It uses teeth to fight with animals.
()3. Which of the following statements is TRUE?
A. Plants can give people enough oxygen.
B. Plants use mouths to talk with others.
C. A Monstera spreads its sticks for sunlight.
D. Few trees can make poisonous sap.
()4. What is the passage mainly about?
A. The living ways of animals.
B. The special living ways of plants.
C. The reasons for protecting plants.
D. The importance of getting sunlight.

本文主要介绍了植物生长的秘密。它们给人们提供水果、蔬菜和氧气。它们不会行走和说话，但是它们之间也会竞争、合作与防御。
1. D 细节理解题。根据Fighting下的信息“In tropical forests, they fight for sunlight.”可知答案。
2. C 细节理解题。根据最后一段中的“More dangerously, it gives off a pungent smell to keep animals away.”可知，尸花通过散发出一种难闻的气味来阻止动物接近它。
3. A 细节理解题。根据第一段中的“And they also give us the oxygen we need.”可知，植物能够给人们提供足够呼吸的氧气。
4. B 主旨大意题。通读全文内容可知，文章从竞争、合作、防御三个方面谈论了植物的特殊生存方式。