Question

【題目】 A remarkable variety of insects live on this planet. More species of insects exist than all other animal species together. Insects have survived on earth for more than 300 million years，and may possess the ability to survive for millions more.

Insects can be found almost everywhere—on the highest mountains and on the bottom of rushing streams, in the cold South Pole and in bubbling hot springs. They dig through the ground, jump and sing in the trees, and run and dance in the air. They come in many different colors and various shapes. Insects are extremely useful to humans, pollinating (授粉) our crops as well as flowers in meadows, forests, deserts and other areas. But ticks and some insects, such as mosquitoes and fleas, can transmit disease.

There are many reasons why insects are so successful at surviving. Their amazing ability to adapt permits them to live in extreme ranges of temperatures and environments. The one place they have not yet been found to any major extent is in the open oceans. Insects can survive on a wide range of natural and artificial foods—paint, pepper, glue, books, grain, cotton, other insects, plants and animals. Because they are small, they can hide in tiny spaces.

A strong, hard but flexible shell covers their soft organs and is resistant to chemicals, water and physical impact. Their wings give them the option of flying away from dangerous situations or toward food or mates. Also, insects have an enormous reproductive capacity: An African ant queen can lay as many as 43,000 eggs a day.

Another reason for their success is the strategy of protective color. An insect may be right before our eyes, but nearly invisible because it is cleverly disguised like a green leaf, lump of brown soil, gray lichen (青苔), a seed or some other natural object. Some insects use bright, bold colors to send warning signals that they taste bad, sting or are poisonous. Others have wing patterns that look like the eyes of a huge predator, confusing their enemies. Some insects also imitate bitter-tasting insects; hungry enemies are fooled into avoiding them.

【1】Insects protect themselves from chemicals by ______.

A.hiding in tiny spacesB.flying away when necessary

C.having a strong shellD.changing colors or shapes

【2】Some insects disguise like natural objects so as to ______.

A.avoid being discoveredB.frighten away their enemies

C.send warning signalsD.look bitter-tasting

【3】The passage is mainly about ______.

A.how insects survive in different placesB.why insects can survive so successfully

C.what insects can do to the environmentD.where insects can be found in quantity

Answer 1

【答案】

【1】C

【2】A

【3】B

【解析】

這是一篇說(shuō)明文。文章主要敘述了昆蟲(chóng)可以在地球上存活上百萬(wàn)年的原因，包括：適應(yīng)能力，擅長(zhǎng)繁殖和運(yùn)用保護(hù)色。

【1】細(xì)節(jié)理解題。根據(jù)文章第四段的A strong, hard but flexible shell covers their soft organs and is resistant to chemicals, water and physical impact. 可知昆蟲(chóng)堅(jiān)硬而靈活的外殼可以保護(hù)它們不受化學(xué)物質(zhì)、水和其它物理影響。C. having a strong shell（有堅(jiān)硬的殼）符合以上說(shuō)法，故選C項(xiàng)。

【2】推理判斷題。根據(jù)文章最后一段的An insect may be right before our eyes, but nearly invisible because it is cleverly disguised like a green leaf, lump of brown soil, gray lichen (青苔), a seed or some other natural object.可知利用保護(hù)色，昆蟲(chóng)看起來(lái)就像一篇葉子，棕色的土壤，灰色的地衣，種子或者其它大自然的物體。故推測(cè)它們偽裝的目的是避免被發(fā)現(xiàn)。A. avoid being discovered（避免被發(fā)現(xiàn)）符合以上推測(cè)，故選A項(xiàng)。

【3】主旨大意題。根據(jù)文章第一段的Insects have survived on earth for more than 300 million years，and may possess the ability to survive for millions more.和文章敘述的主要內(nèi)容可知，本文主要講述了昆蟲(chóng)在世界上存活上百萬(wàn)年的原因。B. why insects can survive so successfully（為什么昆蟲(chóng)可以成功存活）符合以上說(shuō)法，故選B項(xiàng)。