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
21
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/2898352.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]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
随机试题
SHREWD:ACUMEN::A、absorbed:emotionB、fortunate:opportunityC、impetuous:in
Whoapprovedtheproposaltolegalizegaymarriage?[originaltext]Spain’sUp
醚类药物在体内主要发生A.羟基化代谢 B.水解代谢 C.脱烃基代谢 D.还
妇科手术损伤导致的最常见的尿瘘类型为:()A.膀胱尿道阴道瘘 B.
对新进导游人员的( )主要包括全面考核和择优录用两个方面。A.录用考核 B.
患者,男,32岁,因工作不顺,口服了有机磷农药。入院查体:昏迷,瞳孔缩小,面肌颤
银行在核实借款人提供的个人资信及收入状况材料时,下列说法不正确的是()。A
贷款人受理借款人申请后,应当对借款人的信用等级以及借款的合法性.安全性.盈利性等
(2015年真题)某男,60岁,患类风湿性关节炎10年,症见肌肉、关节疼痛,屈伸
A、17、32A,25、98N·m B、10A,15N·m C、1
最新回复
(
0
)