Question

【题目】

The coast redwood is the unchallenged tallest of North American's trees. But do you know it grows from a seed (种子) that is smaller than a pea?

What's special about redwoods?

Redwoods are special for a couple of reasons. The first is their size. Imagine standing next to a tree which is the height of a 30-floor building. The second is their age. Redwoods usually grows to about 600 years old. Some are even more than 2000 years old.

Where do redwoods grow?

To find a coast redwood, you'll have to go to Oregon or California. The land along the west coast, about 450 miles long and up to 35 miles wide, is home to the redwoods. Coast redwoods do not grow anywhere else in the world.

Why do redwoods grow there?

The coast of the Pacific Ocean provides a special environment for the redwoods. Cool, wet air comes from the ocean and keeps the trees wet all year. That is important because most of the rain falls between October and May. During the dry summer months, the trees depend on the wet air over the coast.

How do redwoods survive?

Redwoods have a couple of protection systems(系统). The skin of an adult redwood tree can grow to as thick as 12 inches. The thick covering protects the lower part of the tree from fire damage. Also, most of a redwood's branches and leaves are high up on the tree. This keeps them safe from forest fires. Redwoods are safe from insect damage because the wood has a bitter-tasting chemical.

What should I do?

If you ever get a chance, visit a redwood forest. Look among the tree trunks and imagine who might have camped there a thousand years ago. Look upward and just imagine how high the trees might grow if we protect them.

【1】To see a redwood tree, you should go to _______.

A.the west coast of North America

B.the coast of the Atlantic Ocean

C.South American coast

D.anywhere in the world

【2】What is important for redwoods to grow in dry seasons?

A.Rain fall.B.Sea water.C.Wet air.D.Ocean life.

【3】Redwoods are safe from forest fires because of

A.their tasteB.their chemicalC.their systemsD.their colors

【4】If you want to know how big coast redwoods are, under which question should you look?

A.What's special about redwoods?

B.Where do redwoods grow?

C.Why do redwoods grow there?

D.How do redwoods survive?

【5】What is the author's main purpose for writing this passage?

A.To praise.B.To suggest.C.To introduce.D.To question.

Answer 1

【答案】

【1】A

【2】C

【3】C

【4】A

【5】C

【解析】

这篇短文主要介绍了红杉树的高大外形及超长树龄，然后介绍它在哪里生长，为什么长在哪里，如何生存等等。

【1】细节理解题。根据短文开头The coast redwood is the unchallenged tallest of North American's trees.及下文的To find a coast redwood, you'll have to go to Oregon or California. The land along the west coast,可知，红杉树主要生长在北美西海岸的加利福尼亚州和俄勒冈州。故选A。

【2】细节理解题。根据During the dry summer months, the trees depend on the wet air over the coast.可知潮湿的空气对于干旱季节的红杉树是非常重要的，故选C。

【3】细节理解题。根据Redwoods have a couple of protection systems(系统).及后文The thick covering protects the lower part of the tree from fire damage. Also, most of a redwood's branches and leaves are high up on the tree. This keeps them safe from forest fires.故选C。

【4】细节理解题。根据What's special about redwoods?中提及The first is their size. Imagine standing next to a tree which is the height of a 30-floor building.故选A。

【5】主旨大意题。根据短文介绍了红杉树的高大外形及超长树龄，然后介绍它在哪里生长，为什么长在哪里，如何生存等等。对比四个选项A. To praise.赞美；B. To suggest.建议；C. To introduce.介绍；D. To question质疑，可知短文主要对红杉树进行了介绍，故选C。