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初中英语解题思路—科普环保)
阅读理解(类
全科学习资料,尽掌在手 科普环保类专项练习班级::___________姓名:___________学校___________
___________考号:总题 一分号
得 分
得评分 卷一、阅 人读理解
When you watch TV programs about wild
animals, it is surprising to see how an antelope
(羚羊) can run away from a strong lion. In the
wilderness, everyone has his own way to protect
himself. Even plants have their own ways to
fight off enemies.
Over millions of years, plants have developed
their own defense system (防卫系统). Chemicals
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are fantastically used by plants to survive (幸存).
By making their leaves, flowers, roots and fruits
poisonous (有毒的) to enemies, plants can fight
back.
One such plant is the Golden Wattle tree. The
British scientist David Cameron has found when
an animal eats the tree's leaves, the amount (数量) of poison increases in the other leaves. “It's
like the injured leaves telephoning the others to
fight together against the enemy,” he said.
The tree also sends defense messages to
neighboring plants by giving out a special smell.
Golden Wattle trees in the nearby 45 meters will
get the message and produce more poison within
10 minutes. Now, if an enemy eats too many of
the trees' leaves, he will die.
Every kind of plant or tree is good at producing
a special set of chemicals. Herbivores, like
rabbits, can safely eat the leaves of one tree, but
they may be poisoned by its neighbor.
In this way, plants have not only developed their
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own defense system, but also shared it with
others. This makes it impossible for a single
animal to destroy even a small area of forest.
1.From the first 2 paragraphs, we can learn
that _________.
A. plants can do nothing against their enemies
B. chemicals are quite useful for plants to
survive
C. an antelope can always run away from a
strong lion
D. leaves, roots, flowers and fruits of plants are
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