Question

【题目】根据短文内容，选出最佳选项，选项中有两项为多余选项。

American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these bears have shiny black fur, but in the west they grow brown, red, or even yellow coats. 【1】 Even in the same litter (一窝幼崽）, both brown and black furred bears may be born.

Black bears are the smallest of all American bears, ranging in length from five to six feet, weighing from three hundred to five hundred pounds. 【2】

【3】 However, if attacked, most can climb trees and cover ground at great speeds. When angry or frightened, they are formidable enemies.

Black bears feed on leaves, herbs, fruit, berries, insects, fish, and even larger animals. 【4】 Unlike squirrels, woodchucks, and many other woodland animals, bears do not actually hibernate. Although the bear does not eat during the winter months, sustaining itself from body fat, its temperature remains almost normal, and it breathes regularly four or five times per minute.

【5】 They prefer to live in caves. Baby black bears are born in January or February after a gestation(怀孕) period of six to nine months, and they stay with their mother until they are fully grown or about one and a half years old. Black bears can live as long as thirty years in the wild, and even longer in some nature reserves.

A. To the north, the black bear is actually gray or white in color.

B. Black bears mate all year round

C. One of the most interesting characteristics of bears, including the black bear, is their winter sleep.

D. Like all bears, the black bear is timid, clumsy, and rarely dangerous.

E. Bears often eat a lot of food before they hibernate in their caves.

F. Most black bears live alone, except during mating season.

G. Their eyes and ears are small and their eyesight and hearing are not as good as their sense of smell.

Answer 1

【答案】

【1】A

【2】G

【3】D

【4】C

【5】F

【解析】

试题分析：这篇短文主要介绍了美国黑熊的生活习性等基础信息。

【1】A根据前文In the eastern part of their range, most of these bears have shiny black fur, but in the west they grow brown, red, or even yellow coats。在东部，大部分黑熊长有富有光泽的黑毛,但在西部它们长着棕色,红色,甚至是黄色的毛。主要谈论的是不同方位，黑熊的毛色不同。A符合这一点，故选A。

【2】G第二段Black bears are the smallest of all American bears, ranging in length from five to six feet, weighing from three hundred to five hundred pounds. 黑熊是美国熊类中最小的熊，身长5到6英尺，重三百到五百磅。主要讲得是黑熊小的特点。G符合，故选G。

【3】D根据后文However, if attacked, most can climb trees and cover ground at great speeds. 然而,如果它们受到攻击,大多数黑熊能以极快的速度爬上树。根据这个转折关系，所以前面应该说黑熊攻击性不强，不危险。D符合，故选D.

【4】C根据后文Unlike squirrels, woodchucks, and many other woodland animals, bears do not actually hibernate. 与松鼠、旱獭和其它的林地动物不同，熊并不真正地冬眠。因此前文应该引出熊冬眠的习性。C符合。

【5】F根据后文They prefer to live in caves.它们更喜欢生活在洞穴里。可知前面应该引出它们居住方面的习性。F符合。