Question

【題目】The Smallest Life Around Us

Tiny plants and animals live all around us．We cannot see them because they are so small，but they are everywhere. They live in the soil，in the air，and in rivers and oceans．They grow on mountains and in caves．Some live in the ice at the north and south poles; some live where it is very hot．They are found throughout cities and in the country. They grow on other plants and animals．Some are even living on you，on your skin，hair，and inside your body，in your mouth，nose，and all through your body．

These tiny plants and animals are called microbes．The word microbe is made from two other words：micro，meaning small，and bios，meaning life．So，microbe means small life．

Microbes have been on earth for a very long time．They may have been the first forms of life to be alive．Today there are more microbes in the world than all other living things．

People did not know microbes had existed（存在） long．They were too small for them to see．But people did see many changes in their world﹣important changes．And they did not know what caused them．They saw food that they kept too long change color and begin to smell bad．They saw cuts and wounds grow red and painful and become worse. They saw old plants and leaves and trees crumble apart on the forest floor and disappear into the soil．Such changes were a natural part of the world，but people did not understand them．They did not know these changes were evidence(證據(jù)) of tiny plants and animals growing all around them.

【1】Why couldn't people see microbes？

A. Because they are too small．

B. Because they live inside our body．

C. Because they live far from humans．

D. Because they may have been the first forms of life to be alive．

【2】The underlined phrase" crumble apart" in the last paragraph means"　 　"．

A. grow taller B. change into soil

C. break into tiny pieces D. become colorful and energetic

【3】Choose the answer that completes the web below．

A. Microbes are very small B. Microbes are all around us

C. People can't see microbes D. Food begins to smell bad

Answer 1

【答案】

【1】A

【2】C

【3】D

【解析】本文敘述了我們的周?chē)�到處都有�?xì)菌，因?yàn)樗鼈兲�小了我們看不�?jiàn)。短文給出了細(xì)菌存在的證據(jù)。

【1】細(xì)節(jié)理解題。根據(jù)We cannot see them because they are so small可知，它們太小了，我們看不見(jiàn)。故選A。

【2】詞義猜測(cè)題。根據(jù)on the forest floor and disappear into the soil．可知，我們可以看出是應(yīng)該是老的植物和樹(shù)葉crumple apart在森林地面上并消失在土壤中，根據(jù)我們的生活經(jīng)驗(yàn)，落葉和樹(shù)木的枝條脫落后，會(huì)支離破碎，最終會(huì)完全消失在土壤中，因此這里crumple apart的含義應(yīng)該是break into tiny pieces．故選C。

【3】段落大意題。根據(jù)They did not know these changes were evidence of tiny plants and animals growing all around them．可知，這些變化證明了微生物生活在我們的周?chē)�，這些變化就是上面一段的內(nèi)容，即They saw food that they kept too long change color and begin to smell bad（食物儲(chǔ)存久了之后顏色變化并且會(huì)問(wèn)到難聞的味道）．They saw cuts and wounds grow red and painful and become worse（傷口會(huì)出現(xiàn)發(fā)紅、疼痛、感染）．They saw old plants and leaves and trees crumble apart on the forest floor and disappear into the soil（落葉和植物尸體會(huì)消失在土壤中）．所有的這些變化都可以說(shuō)明微生物生活在我們的周?chē)�，因此答案為Food begins to smell bad．故選D。