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
2023-08-05
30
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、Evolution of monarch butterflies.
B、Living habits of monarch butterflies.
C、Migration patterns of monarch butterflies.
D、Environmental impacts on monarch butterfly life
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2898355.html
相关试题推荐
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Every
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Every
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvania
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvania
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvania
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
随机试题
ForwhomdidPresidentObamadelivertheaddress?[br][originaltext]President
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
[originaltext]W:Bob,willyoutellmesomethingaboutthenewintelligenthous
构成出版活动的基本要素包括( )。A.编辑 B.创作 C.复制 D.评论
简述中效利尿药的药理作用和临床应用。
下列说法中错误的是()。A.分析师通过自身分析研究得出的有关上市公司经营状况的
封闭式基金的交易价格主要受()的影响。A.二级市场供求关系 B.基金份额净值
(2018年5月)人事部门对自学的管理不包括()A.制订自学计划 B.指导员
请根据下面提供的单据完成关于《入境货物报检单》填制的单项选择题24—33题:
承包人在开工前,按照监理提供的测量基准点、基准线和水准点及其书面资料进行复核,建
最新回复
(
0
)