首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Each flock of butterflies lays eggs in the same states. B、They start to lay eggs when they are nine months old. C、Each generat
A、Each flock of butterflies lays eggs in the same states. B、They start to lay eggs when they are nine months old. C、Each generat
admin
2020-05-08
29
问题
Monarch butterflies, the large origin black insects, are a common summer sight in the northern United States and Canada. They brighten in parks and gardens as they fly among the flowers. What makes monarch butterflies particularly interesting is they migrate—all the way to California or Mexico and back. They are thought to be the only insect that does this. Every year and the late summer, monarchs begin their migration to the south. Those heading for Mexico go first for the Louisiana-Mississippi region. Then they fly across the Gulf of Mexico into Texas. Once in Mexico, they establish themselves in one of about 15 sites in a mountain forest. Each site provides a winter home for millions of monarchs. The butterflies are so numerous that they often cover entire trees. When spring comes, they begin their long journey north. The question is often asked whether every butterfly makes the round trip journey every year. And the answer is no. The average monarch lives about nine months. So one flying north might lay eggs in Louisiana and then die. The eggs of that generation may be found in Kentucky; the eggs of the next generation may end up in Wisconsin or Michigan. The last generation of the season about the fourth will make the journey back to Mexico and restart the cycle. Scientists learn about monarch butterflies’ migration by capturing and placing identifying tags on the insects. By recapturing a tagged monarch and noting where it came from, the next scientist can figure out things like butterfly’s age and its routine.
Questions 12 to 15 are based on the passage you have just heard.
12. What is unique about the monarch butterflies according to the speaker?
13. Where do monarch butterflies settle at the end of the migration?
14. What does the speaker say about monarch butterflies’ reproduction?
15. What is the talk mainly about?
选项
A、Each flock of butterflies lays eggs in the same states.
B、They start to lay eggs when they are nine months old.
C、Each generation in a cycle lays eggs at a different place.
D、Only the strongest can reach their destination to lay eggs.
答案
C
解析
选项是关于 They 产卵的情况。短文中提到 monarch butterflies 向北飞行,它们可能在路易斯安那州产卵后死亡。下一代的卵可能出现在肯塔基州,再下一代的卵可能出现在威斯康辛州和密歇根州。本季的最后一代可能会返回到墨西哥,然后开始新一轮的循环。由此可以推断出正确答案是C)。
转载请注明原文地址:https://kaotiyun.com/show/k7W7777K
0
大学英语六级
相关试题推荐
Whyisitsodifficulttofallasleepwhenyouareovertired?Thereisnooneanswerthat【C1】______toeveryindividual.Butmany
Everyyearthroughouttheworld【C1】______6,000earthquakesaredetected.Thevastmajorityoftheseare【C2】______toosmallorto
A、30.B、42.C、62.D、80.B短文首句就提到David将在玻璃盒中待上6周,后文详细介绍时又一次提及sixweeks,故B为答案。
A、Toorganizeactivitiesforchildren.B、Toselllocalfarmproducts.C、Tobringtouriststothetown.D、Toraisefundfortheh
A、Ratherdifficulttoplease.B、Rudetowomendrivers.C、Talkativeandgenerouswithtips.D、Differentinpersonality.D①形容词选项,多
A、Hiseducationalbackground.B、Thereasonwhyhequittedhispreviousjob.C、Theturningpointinhiscareer.D、Examplesofpro
A、10.B、15.C、20.D、25.C细节题。从twentyyearsago,itboughtasmallnumberofcampsitesintheUK,andbeganofferingcampingholida
A、ToMichigan.B、ToAsia.C、ToMaryland.D、ToCanada.D四个选项均是地名,可猜测题目与地点有关。短文说,白蜡虫向北扩散奎Ontario,Canada。故D是正确答案。A说的Michigan是美国首次发现
A、FromtramtotrolleybustoRoutemaster.B、FromtrolleybustoRoutemastertoredbus.C、FromtrolleybustoRoutemastertomoder
随机试题
A.贫血伴球形红细胞增多B.贫血伴靶形红细胞增多C.贫血伴红细胞碎片增多D.贫血伴红细胞CD55、CD59降低E.贫血伴血肌酐增高阵发性睡眠性血红蛋白尿症
A、时好时坏,病情进展缓慢B、起病急骤,进展迅速C、病情急剧,危及生命D、脏器衰退,代偿不足E、症状消除,逐渐恢复老年病人病情特点()。
“进口口岸”栏应填()。“项号”栏应填()。
我国境内的股票价格指数不包括()。
根据《行政处罚法》的规定,下列关于行政拘留的说法正确的是()。
“几鼎既成,迁于三国。夏后氏失之,殷人受之;殷人失之,周人受之。”其中所说的“九鼎”之所以被广泛重视并在夏商周流转,主要因为它是()。
Heistooyoungtobeableto______betweenrightandwrong.
“中央厨房”的新闻生产模式是什么?具有什么特点?解决什么问题?是否有局限性?为什么?(北大2018年研)相关试题:(1)试论述“中央厨房”的新闻生产及运作机制。(华科2019年研)(2)以中西方媒体为例,简述媒介融合下“中央厨房”式的新闻内容生产与分
阅读以下说明,回答以下问题,将解答填入答题纸对应的解答栏内。【说明】某单位网络结构如图1.1所示,网络中所有路由器均使用RIP协议。在网络部署完成后进行了如下测试:1.在主机host101上对Router2的F0/0口及网络1的hostl进行了连
Withfuelpricesgoingup,carbuyersarechangingtheirideaofbuyingacar.
最新回复
(
0
)