Question

【題目】 Scientists who study insects are troubled now. All across the United States, bees are leaving their hives and never returning. According to the beekeepers across the country, 25 to 40 percent of the bees in the United States have left their hives since last fall. So far, no one can explain why.

Bees play an important role in the production of about one third of the food we eat. A large number of plants not only need people’s care but also need bees that spread pollen from flower to flower. Without this process, a plant can’t produce seeds or fruits.

Now, a group of scientists and beekeepers are trying to find out what has happened. By examining bees’ behavior and health, they hope to find out what has caused the bees’ disappearance and to prevent bees from disappearing in the future.

Some people think the disappearance may be caused by disease. According to Dewey Caron, a researcher at the University of Delaware, the bees have signs of troubled immune systems (免疫系統(tǒng)) inside their bodies. But why would troubled immune systems cause bees to leave their hives? After all, when people are sick, they want to stay at home. Caron guesses that sick bees may have difficulty figuring out where their homes are.

“Another cause may be some chemicals that farmers use to kill unwanted insects on crops.” says Jerry Hayes, who works at the Florida Department of Agriculture.

【1】The underlined part “this process” refers to ________.

A.people’s care

B.bees’ leaving their hives

C.bees’ spreading pollen from flower to flower

D.beekeepers’ raising bees

【2】It can be inferred from the passage that ________.

A.the use of some chemicals is the cause of the bees disappearance

B.sick bees are not able to find where their hives are

C.it’s not known yet why a lot of bees are leaving their hives and never returning

D.there will be no bees in America in the near future

【3】What would be the best title for the passage?

A.Bees,Humans’ Friends

B.Scientists Are Interested in Bees

C.Why Are Bees Leaving?

D.How Do Bees Send out Information?

【4】The passage is most probably taken from ________.

A.science news

B.a public advertisement

C.a book on advanced technology

D.a business report

Answer 1

【答案】

【1】C

【2】C

【3】C

【4】A

【解析】

本文為一篇說(shuō)明文。文章主要探討了美國(guó)的蜜蜂為什么會(huì)離開(kāi)蜂巢不再返回。

【1】

詞句猜測(cè)題。這里需要猜測(cè)this process的意思，因?yàn)?/span>process前用了定冠詞，所以一定是指代前文出現(xiàn)的內(nèi)容。根據(jù)A large number of plants not only need people’s care but also need bees that spread pollen from flower to flower.可知，許多植物不僅需要人們的照料，還需要蜜蜂在花間傳播花粉。由此可知，this process指的是“蜜蜂在花間傳播花粉”。故選C。

【2】

推理判斷題。根據(jù)第三段中的By examining bees’ behavior and health, they hope to find out what has caused the bees’ disappearance and to prevent bees from disappearing in the future.可知，通過(guò)檢查蜜蜂的行為和健康狀況，他們希望找出蜜蜂消失的原因，并防止蜜蜂在未來(lái)消失。由此推知，目前還不清楚為什么很多蜜蜂離開(kāi)蜂巢再也不回來(lái)。故選C。

【3】

主旨大意題。本文的主旨句為第一段中的All across the United States, bees are leaving their hives and never returning.(在美國(guó)各地，蜜蜂都離開(kāi)了蜂巢，再也沒(méi)有回來(lái))，后面的段落均是為了解開(kāi)這一秘密而展開(kāi)。由此可知，Why Are Bees Leaving?(蜜蜂為什么離開(kāi)？)適合做本文最佳標(biāo)題。故選C。

【4】

推理判斷題。文章主要講介紹的是蜜蜂為何離開(kāi)蜂巢不再回歸，應(yīng)該屬于科普知識(shí)類的文章。故選A。