首页
登录
职称英语
Some people associate migration mainly with birds. Birds do travel vast dist
Some people associate migration mainly with birds. Birds do travel vast dist
游客
2025-02-02
19
管理
问题
Some people associate migration mainly with birds. Birds do travel vast distances, but mammals also migrate. An example is the caribou, reindeer that graze on the grassy slopes of northern Canada. When the weather turns cold, they travel south until spring. Their tracks are so well-worn that they are clearly visible from the air. Another migrating mammal is the Alaska fur seal. These seals breed only in the Pribilot Islands in the Bering Sea. The young are born in June and by September are strong enough to go with their mothers on a journey of over 3,000 miles. Together they swim down the Pacific Coast of North America. The females and young travel as far as southern California. The males do not journey so far. They swim only to the Gulf of Alaska. In the spring, males and females all return to the islands, and there the cycle begins again. Whales are among the greatest migrators of all. The humpback and blue whales migrate thousands of miles each year from the polar seas to the tropics. Whales eat huge quantities of plankton. These are most abundant in cold polar waters. In winter, the whales move to warm waters to breed and give birth to their young. [br] Whales live on ______.
选项
A、tiny plants and animals in the sea
B、the grassy slopes of northern Canada
C、their young in cold winter
D、the abundant seafood in tropic waters
答案
A
解析
细节题型。见文章倒数第三、四句:Whales eat huge quantities of plankton(浮游生物). These are most abundant in cold polar waters.所以选项A为答案。也可用排除法:选项B指的是reindeer的习性,选项C文中未提及鲸以幼仔为生,选项 D指的是tropic water,与polar water相反;所以只有选项A正确。
转载请注明原文地址:http://tihaiku.com/zcyy/3940129.html
相关试题推荐
Caesarwasright.Thinpeopleneedwatching.I’vebeenwatchingthemformos
Caesarwasright.Thinpeopleneedwatching.I’vebeenwatchingthemformos
Caesarwasright.Thinpeopleneedwatching.I’vebeenwatchingthemformos
Injustthreeyears,theNethasgonefromaplaygroundforthelocalpeopleto
Somepeopleassociatemigrationmainlywithbirds.Birdsdotravelvastdist
Somepeopleassociatemigrationmainlywithbirds.Birdsdotravelvastdist
Somepeopleassociatemigrationmainlywithbirds.Birdsdotravelvastdist
Somepeopleassociatemigrationmainlywithbirds.Birdsdotravelvastdist
Somepeopleassociatemigrationmainlywithbirds.Birdsdotravelvastdist
Somepeopleassociatemigrationmainlywithbirds.Birdsdotravelvastdist
随机试题
W:IdohopePeterdowellinhisstudiesthissemester.M:______A、Yes.Ihope
[originaltext]Areyoufortyyearsoldandfat?Doyouwearfineclothes?Do
Themoreimagesyou_______________(与一件事联系起来),themoreconvincedyouarethatyo
下列岗位中,属于安全设施、设备的质量负责的岗位的是()。A.对安全设施的设计质
设φ(x)为连续型随机变量的概率密度,则下列结论中一定正确的是:
电力系统正常运行时频率偏差为±0.2Hz,当系统容量较小时偏差可放宽到()。A.
关于下列体育项目,不正确的说法是:A.体操比赛男子有六个单项,女子有五个单项
房地产抵押对房地产估价的需要,归纳起来主要有()。A.初次抵押估价 B.
下列各项中,企业应计入自行建造固定资产成本的有()。A.为建造固定资产通过出让方
避免国际重复征税的基本方法是免税法和() A.退税法B.抵免法
最新回复
(
0
)