Migratory birds fly in formation to______. What makes sustained observation of flock formations very difficult?

admin2009-06-24 74

问题 Migratory birds fly in formation to______.
What makes sustained observation of flock formations very difficult?

选项 A、The characteristics of echelon changes.
B、Lack in hands and equipment.
C、Too many intuitive predictions.
D、Too many factors involved in echelons.

答案B

解析

转载请注明原文地址:https://kaotiyun.com/show/QbTd777K

本试题收录于：公共英语五级笔试题库公共英语（PETS）分类

公共英语五级笔试

公共英语（PETS）

相关试题推荐

GenerationGapAfewyearsago,itwasfashionabletospeakofagenerationgap,adivisionbetweenyoungpeopleandtheir
ChangesinMuseumsMuseumshavechanged.Theyarenolongerplacesthatone"should"visit,theyareplacestoenjoyand
ChangesinMuseumsMuseumshavechanged.Theyarenolongerplacesthatone"should"visit,theyareplacestoenjoyand
AnAwfulAfternoonSometimesIfeelthatbeingthemotherofthreesmallchildrenislikerunningalargecircus(马戏团).Onea
AnAwfulAfternoonSometimesIfeelthatbeingthemotherofthreesmallchildrenislikerunningalargecircus(马戏团).Onea
Whereisthenapkinnormallyplacedduringthemeal?Whichofthefollowingshowsgoodtablemanners?
APopularityofScienceFictionBAFairlyNewDevelopmentCClassicsofScienceFictionDDifficultyinKeepingaheadofSc
Hespokesoquicklythatitwasdifficulttotakedownwhathewassaying.
ALetterfromAlanIhavelearntofaplantobuildthreehundredhousesonthelandcalledParson’sPlacebythefootballg
Anoldfriendcalledonmethedaybeforeyesterday.

随机试题

求不定积分∫ln(x+)dx．
Motherhopeshersonwill______doinganythingrash.
有关肺通气阻力的叙述，下列哪项是错误的
风湿病常有
肉类连汤食用米在淘洗过程中主要损失
患者，男，54岁，因患肺炎住院治疗，护士准备用静脉留置针对其进行静脉输液。患者觉得静脉留置针价格贵，对护士提出换用一次性头皮针，护士不耐烦地说：“你说了算，还是我说了算。”护士的行为主要违背了哪项伦理原则
对项目建设全过程的安全生产负总责的单位是()。
单因素敏感性分析是房地产投资项目敏感性分析的()方法。
DNA是由4种单核苷酸按特定顺序组成的，一个单核苷酸相当于一个密码，3个相邻的密码组成一个密码子，十几个至上千个密码子有序地连接起来，就形成一个遗传功能单位，人们称之为结构基因。最准确理解上面一段话意思的是()。
项目范围变更控制，包括______。A．一系列正规的证明文件，用于定义正规项目文件的变更步骤B．一系列文档程序，用于实施技术和管理的指导和监督，以确定和记录项目条款的功能和物理特征、记录和报告变更、控制变更、审核条款和系统，由此来检验其与要求的一致性

最新回复(0)

Migratory birds fly in formation to______. What makes sustained observation of flock formations very difficult?

公共英语五级笔试

公共英语（PETS）

GenerationGapAfewyearsago,itwasfashionabletospeakofagenerationgap,adivisionbetweenyoungpeopleandtheir

ChangesinMuseumsMuseumshavechanged.Theyarenolongerplacesthatone"should"visit,theyareplacestoenjoyand

ChangesinMuseumsMuseumshavechanged.Theyarenolongerplacesthatone"should"visit,theyareplacestoenjoyand

AnAwfulAfternoonSometimesIfeelthatbeingthemotherofthreesmallchildrenislikerunningalargecircus(马戏团).Onea

AnAwfulAfternoonSometimesIfeelthatbeingthemotherofthreesmallchildrenislikerunningalargecircus(马戏团).Onea

Whereisthenapkinnormallyplacedduringthemeal?Whichofthefollowingshowsgoodtablemanners?

APopularityofScienceFictionBAFairlyNewDevelopmentCClassicsofScienceFictionDDifficultyinKeepingaheadofSc

Hespokesoquicklythatitwasdifficulttotakedownwhathewassaying.

ALetterfromAlanIhavelearntofaplantobuildthreehundredhousesonthelandcalledParson’sPlacebythefootballg

Anoldfriendcalledonmethedaybeforeyesterday.

求不定积分∫ln(x+)dx．

Motherhopeshersonwill______doinganythingrash.

有关肺通气阻力的叙述，下列哪项是错误的

风湿病常有

肉类连汤食用米在淘洗过程中主要损失

对项目建设全过程的安全生产负总责的单位是()。

单因素敏感性分析是房地产投资项目敏感性分析的()方法。