Question

【题目】Have you ever heard of a bug（虫子）called the cicada（蝉）?Well,a special kind of these bugs live underground in the US for most of their lives.They have an interesting bio-clock.【1】

Every 17 years,billions of the noisy Brood V cicadas will swarm（涌现）to northeastern parts of the US, including New York,Ohio and Pennsylvania.【2】But there are usually a lot less of them compared to the Brood V cicadas.

【3】According to Discovery News,these bugs started their lives in 1999.And as their 17-year life cycle comes to an end,they go above ground when their underground homes get warmer—64 degrees Fahrenheit (about 18℃) to be exact.Then the females will lay hundreds of eggs in trees.【4】The baby cicadas will go underground,and the 17-year cycle will start over again.

While they can be kind of annoying,these bugs don't harm humans.【5】That sound is the male cicadas attracting the female cicadas.Besides,a large amount of laid eggs can sometimes harm small trees and bushes because there are so many of the 17-year cicadas.However,after this summer,these bugs will mostly mind their own business until 2033.

A.They feed on leaves and roots.

B.It tells them when to go above ground.

C.What makes Brood V cicadas so special?

D.But they do make a lot of noise during their time above ground.

E.After about four to six weeks,the mother and father cicadas will die.

F.For a different brood of cicadas,mating season is just around the corner.

G.There are other kinds of cicadas that come around once a year or every 13 years.

Answer 1

【答案】

【1】B

【2】G

【3】C

【4】E

【5】D

【解析】 本文属于科普文章。主要讲述了有一种蝉，每17年就会大量涌向美国的地面。

【1】B

考查对上下文的理解与推理判断能力。根据上句可知这种蝉一生中大部分时间生活在美国的地下，但它们有一个有趣的生物钟，可以唤醒它们出现到地面上，故选B。

【2】G

考查对上下文的理解与推理判断能力。本空前面的内容说数十亿育雏V蝉的涌现，空后说有一种比它们少。分析选项G项（有其他种类的蝉，一年一次或每13年一次）显然符合题意，形成对比对。故选G项。

【3】C

考查对上下文的理解与推理判断能力。根据空后本段内容可知主要叙述这种蝉的生活特性。分析选项可知C项可知符全题意。故选C。

【4】E

考查对上下文的理解与推理判断能力。空后讲述幼虫的回到地下，17年后又一个轮回，可知是生死轮回。分析选项可知E.幼蝉的父母死去，幼虫的诞生符合题意，故选E。

【5】D

考查对上下文的理解与推理判断能力。分析空前内容可知蝉虽然对人类无害，但却让人生气。

尤其是第一句的词“kind of annoying”，正与D项（但是他们在地上的时候确实发出很多噪音）相符合。故选D。