Question

【題目】根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為

多余選項(xiàng)。

Winter begins in the north on December 22nd.People and animals have been doing what they always do to prepare for the colder months, Sqzeirrels, for example, have been busy gathering nuts from trees. 【1】They examined differences between red squirrels and gray squirrels in the American state of Indiana. The scientists wanted to know how these differences could affect the growth of black walnut(黑胡桃）trees【2】 The black walnut tree is also a central part of some hardwood forests.

Rob Swihart of Purdue University did the study with Jake Goheen, a former Purdue student nowat the University of New Mexico. The two researchers estimate that several times as many walnuts grow when gathered by gray squirrels as compared to red squirrels.Gray squirrels and red squirrels do not store nuts and seeds in the same way. Gray squirrels bury nuts one at a time in a number of places.【3】 So some nuts remain in the ground. Conditions are right for them to develop and grow the following spring.Red squirrels, however, store large groups of nuts above ground.

【4】But Professor Swihart says their numbers began to decrease as more forests were cut for agriculture. Red squirrels began to spread through the state during the past century. The researchers say red squirrels are native to forests that stay green all year, unlike walnut trees. They say the cleaning of forest land for agriculture has helped red squirrels invade（涌入）Indiana.【5】

A. Gray squirrels are native to Indiana.

B. But they seldom remember where they buried every nut.

p>C. Red squirrels bury nuts in a different way.

D. The black walnut is the nut of choice for both kinds of squirrels.

E. Jake Goheen calls them a sign of an environmental problem more than a cause.

F. Scientists are worried that they will drive away the gray squirrels.

G. Well, scientists have been busy gathering information about what the squirrels

do with the food they collect.

Answer 1

【答案】

【1】G

【2】D

【3】B

【4】A

【5】E

【解析】

【1】根據(jù)本空格前的一句have been busy gathering nuts from trees，以及下文是講述科學(xué)家們研究的內(nèi)容的，可鎖定G為正確答案。

【2】根據(jù)本題前出現(xiàn)的black walnut ，再結(jié)合選項(xiàng)，發(fā)現(xiàn)D選項(xiàng)中同樣出現(xiàn)了black walnut 一詞，可確定答案為D。

【3】根據(jù)本題前出現(xiàn)的句子中有bury nuts此關(guān)鍵詞，再結(jié)合選項(xiàng)，發(fā)現(xiàn)B選項(xiàng)中同樣出現(xiàn)了bury nuts，可知B為正確答案。

【4】此空格是本段的首句。結(jié)合本段講述的內(nèi)容以及空格后的句子，可知選A。

【5】聯(lián)系上下文以及結(jié)合選項(xiàng)的意思，可知此題應(yīng)選E。