首页
登录
职称英语
[originaltext] I am glad that all the members of our zoology class could com
[originaltext] I am glad that all the members of our zoology class could com
游客
2023-08-31
76
管理
问题
I am glad that all the members of our zoology class could come down to the zoo today to continue our animal adaptation. As you know, some animals are able to move between domestic and wild environments with relatively little difficulty. The first example of this that we will see here at the zoo is the wild burro. As you are probably aware, burros are relatives of the horse. Wild burros in the United States are descendants of the pack animals brought here three centuries ago by Spanish explorers, and these pack burros were in turn the descendants of wild African asses.
About 100 years ago, gold prospectors came to the mountains and deserts of the western United States. Most of the prospectors were accompanied by steadfast companions—burros. These animals were used along with the mule train that served the many mining operations. But when gold and silver mining died out, many of the prospectors turned their burros loose, they joined wild burros that were already roaming the hills and canyons who were the descendants of those brought by the Spanish. The prospectors knew that their burros were hardy animals, completely able to take care of themselves in the wild. The fact that there are over 11 thousand wild burros living in the western states today testifies to their great adaptive ability.
选项
A、To work in mining operations.
B、To carry scientific supplies.
C、To cross the North American continent.
D、To help cultivate the frontier.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2973081.html
相关试题推荐
[originaltext]Botany,thestudyofplants,occupiesapeculiarpositionin
[originaltext]Botany,thestudyofplants,occupiesapeculiarpositionin
[originaltext]Thecostisgoingupforjustabouteverything,andcolleget
[originaltext]W:Howareyoudoing,Christopher?M:Tobehonest,I’mreallyfe
[originaltext]W:Howareyoudoing,Christopher?M:Tobehonest,I’mreallyfe
[originaltext]M:I’mplanningtobuyahouse,andI’dliketofindoutabouta
[originaltext]M:Whyareyouleavingsoearly?Themoviedoesn’tstarttillsev
[originaltext]M:Whyareyouleavingsoearly?Themoviedoesn’tstarttillsev
[originaltext]M:Whyareyouleavingsoearly?Themoviedoesn’tstarttillsev
[originaltext]M:Whyareyouleavingsoearly?Themoviedoesn’tstarttillsev
随机试题
HowtoSurvivetheHeat1.Heatwavescanbedeadly■nature’sdeadlies
Marijuana(大麻)isagreen,brown,orgraymixtureofdried,shreddedleaves,
It’snormaltothinkofaconversationastakingplacebetweenpeoplewhoar
神经细胞兴奋时,其兴奋性的周期变化是( )。A.绝对不应期→相对不应期→超常期
患儿男,6岁。反复咳嗽、咳痰、咳血3年,常见于清晨起床后。曾有重症麻疹肺炎病史,
子宫内膜不完全脱落性功血的诊刮时间与可能的病理结果是A.经前诊刮,病理:增殖期子
下列制备注射剂方法中,不能除去热原的方法是A.蒸馏水器上附灭隔沫装置B.250℃
在高压设备上工作,应至少由()进行,并完成保证安全的组织措施和技术措施。一人;两
下列关于人力资源预测方法的说法,不正确的是()A:趋势外推法最简单,自变量只有一
下列混合成本分解方法中,可能是最完备的方法,但在进入细节之后要使用其他技术方法作
最新回复
(
0
)