首页
登录
职称英语
[originaltext] How do the birds manage to find their way? There seems to be
[originaltext] How do the birds manage to find their way? There seems to be
游客
2024-02-23
75
管理
问题
How do the birds manage to find their way? There seems to be no single answer: they use many methods. Some we are beginning to understand; and there may be some that depend on abilities we have not yet suspected. Many birds certainly follow major geographical features. Migrants follow recognized land, fly over familiar sea and arrive at their summer homes.
But all birds cannot use such straightforward methods. An Arctic sea bird, for example, has to fly at least 3,000 kilometers across the Antarctic Ocean with no land to guide it. We know that some birds flying at night, navigate by the star for on cloudy nights they tend to get lost.
Day-flying birds may use the sun. If they are to do so, they must have a precise sense of time. Still others appear to be able to use the earth’ s magnetic field as a guide. So it seems that many migrating birds must carry in their brains a clock, a compass and the memory of a map.
选项
A、Their memory.
B、The stars.
C、The sense of time.
D、Their experience.
答案
B
解析
此题的问题是:“How do some birds fly at night? They use…”此题四个选项中A、B. C均在文中被提及,但与 birds flying at night有关的只有star,因此B为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3477282.html
相关试题推荐
[originaltext]RockandrollcombinesmanykindsofAmericanmusic--country
[originaltext]W:I’vebeenreadingabout(23)anewhealthfulsnackfood.It’sm
[originaltext]W:I’vebeenreadingabout(23)anewhealthfulsnackfood.It’sm
[originaltext]W:Isthisthecomplaintdepartment?I’dliketospeaktothebos
[originaltext]W:Isthisthecomplaintdepartment?I’dliketospeaktothebos
[originaltext]W:Isthisthecomplaintdepartment?I’dliketospeaktothebos
[originaltext]W:Isthisthecomplaintdepartment?I’dliketospeaktothebos
[originaltext]W:Isthisthecomplaintdepartment?I’dliketospeaktothebos
[originaltext]Shynessisthecauseofmuchunhappinessforagreatmanypeo
[originaltext]W:Iunderstandyou’vebecomearealcooklately,Martin.M:Well
随机试题
Thebusinessofeachday,______sellinggoodsorshippingthem,wentquitesmoo
Insomecountries,societalandfamilialtreatmentoftheelderlyusuallyre
Whatdodietingandenergypolicyhaveincommon?TheSnackWelleffect.The
[originaltext]M:I’vebeenassignedtocoverthegovernment’sspeechtoday.Wha
操作维护子系统的简写为()。A.NSS B.OSS C.BSS D.MS
冻土爆破施工离高压电线()。A.50m B.100m C.150m
以下关于总预算的说法中,正确的是()。A.总预算包括运营预算和财务预算。 B.
男,45岁,外伤失血性休克,输入大量血液一周后,全身皮下散在紫癜,血小板低于10
下面谱例中的节奏型是哪种舞蹈的主要节奏音型?() A.桑巴 B.哈巴涅
2010年,天津市全市生产总值突破9000亿元。据初步核算,并经国家统计局评估审
最新回复
(
0
)