首页
登录
职称英语
[originaltext] Monarch butterflies, the large orange and black insects, are
[originaltext] Monarch butterflies, the large orange and black insects, are
游客
2024-03-07
25
管理
问题
Monarch butterflies, the large orange and black insects, are a common summer sight in the northern United States and Canada. They brighten 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 in 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 forth 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 the butterfly’s age and its routing.
Question 12. What is unique about monarch butterflies according to the speaker?
Question 13. Where do monarch butterflies settle at the end of their migration?
Question 14. What does the speaker say about monarch butterflies’ reproduction?
Question 15. What is the talk mainly about?
选项
A、They have bright colors and intricate patterns.
B、They can only survive in parts of the Americas.
C、They are the only insect that migrates along fixed routes.
D、They have strong wings capable of flying long distances.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3514612.html
相关试题推荐
[originaltext]Nowadays,moreandmorestudentsprefertohuntjobsonline.Howe
[originaltext]Today,I’dliketotalkabouthowsittingforalongtimewillaf
[originaltext]Supposesomeoneinventedagiftcardsoversatilethatitcouldb
[originaltext]Supposesomeoneinventedagiftcardsoversatilethatitcouldb
[originaltext]Whencaughtinpouringrainwithoutanumbrella,mostpeoplepick
[originaltext]Whencaughtinpouringrainwithoutanumbrella,mostpeoplepick
[originaltext]Whencaughtinpouringrainwithoutanumbrella,mostpeoplepick
[originaltext]M:Shakinganinfantoutofangerorfrustrationcanleadtoasev
[originaltext]M:Shakinganinfantoutofangerorfrustrationcanleadtoasev
[originaltext]M:Shakinganinfantoutofangerorfrustrationcanleadtoasev
随机试题
[originaltext]Woman:Itwouldbedifficultformanypeopletodofileamountof
(1)ResearcherswhopickedupandanalyzedwildchimpdroppingssaidonThur
Thesuddendeathofanadmiredpublicpersonalwaysseemsanimpossibility.
具有位浮、形细、势软特点的脉是:A.濡脉 B.弱脉 C.虚脉 D.微脉
患者,男,38岁。慢性肾衰竭伴严重水肿,不妥的护理措施是()。A.准确记录24小
简述现代企业人力资源管理各个历史发展阶段的特点。
根据我国民事诉讼法与司法解释的规定,下列关于督促程序的表述哪个是不正确的? A
下列情况中,适用分步法计算产品成本的是( )。A.单件、小批生产 B.大量大批
属于H受体拮抗剂的是A.奥美拉唑 B.胶体次枸橼酸铋 C.米索前列醇 D.
固体废物的处理方法有()。A.回收利用 B.减量化处理 C.焚烧技术和填埋
最新回复
(
0
)