首页
登录
职称英语
[originaltext] Monarch butterflies are a common summer sight in the northern
[originaltext] Monarch butterflies are a common summer sight in the northern
游客
2024-04-26
6
管理
问题
Monarch butterflies are a common summer sight in the northern United States and Canada. These large orange and black insects brighten parks and gardens as they fly lightly among the flowers. What makes monarchs particularly interesting is that 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 journey to the south. Those heading for Mexico go first for the Louisiana Mississippi area. They fly across the Gulf of Mexico into Texas. Once in Mexico, they settle themselves in one of about fifteen places in a mountain forest filled with fir trees. Each place provides a winter home for millions of monarchs. There are so many butterflies that they 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 their way back to Mexico and then restart the journey.
Scientists learn about monarchs’ migration by catching and making marks on the insects. By researching a monarch with such a mark and noticing where it came from, the next scientist can get to know things like the butterfly’s age and its routing.
Questions 23 to 25 are based on the passage you have just heard.
23. Which is one of the places where monarchs spend the winter?
24. How can the routing of monarchs’ migration be learned?
25. What does the passage mainly discuss?
选项
A、A plain in Texas.
B、A forest in Mexico.
C、The Gulf of Mexico.
D、An area in Mississippi.
答案
B
解析
根据短文中提到的Once in Mexico…in a mountain forest filled with fir trees.Each place provides a winter home for…monarchs可知,这些君主斑蝶将会在墨西哥的一个枞树林里过冬,故B)为答案。the winter是听音的关键。听到短文中的Mexico,forest,winter home等关键信息词可得出答案。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3572460.html
相关试题推荐
[originaltext]Monarchbutterfliesareacommonsummersightinthenorthern
[originaltext]Monarchbutterfliesareacommonsummersightinthenorthern
[originaltext]Monarchbutterfliesareacommonsummersightinthenorthern
[originaltext]MySpace,thesocialnetworkingwebsite,isdifferentfromoth
[originaltext]I’llstillbeworking,butthingswouldbedifferent.Withan
[originaltext]I’llstillbeworking,butthingswouldbedifferent.Withan
[originaltext]M:Whereareyougoing,Catherine?TodayisSaturday.W:Saturday
[originaltext]M:Whereareyougoing,Catherine?TodayisSaturday.W:Saturday
[originaltext]W:Whataday!I’mexhausted.M:Well,it’snotoveryet.W:Yeah
[originaltext]M:Iguesswe’llhaveahotsummeragain.W:Iknow.Lastsummer
随机试题
[originaltext]W:Hi,Michael.Icanhardlyrecognizeyou.Whyareyoudressedu
______,norisheinterestedinmesubject.A、HeneitherworkhardB、Neitherhard
[originaltext]Malaria,theworld’smostwidespreadparasiticdisease,kills
以点电荷q所在点为球心,距点电荷q的距离为r处的电场强度应为:
Thechangeinthatvillagewasmiraculou
降低工程项目变动成本的关键是()。A.降低固定成本的绝对值 B.减
下列关于行政许可设定权的说法中,哪些是正确的?()A.教育部有权对法律设定
共用题干 一般资料:求助者,女性,32岁,公司职员。案例介绍:求助者由于婆媳矛
当构筑物无抗浮设计时,雨期水池施工过程抗浮措施不包括()A.排除积水 B.基
生产经营单位应当对从业人员进行安全生产教育和培训,包括()的培训。 A
最新回复
(
0
)