问题 选择题

不属于动物行为的一项是

A.鲸鱼“喷水”

B.鸟儿鸣叫

C.狼捕食,鹿奔跑

D.变色动物随环境的变化而改变体色

答案

答案:A

考点:

分析:此题考查的知识点是动物行为.解答时可以从动物行为的概念、特点方面来切入.

解答:解:动物行为是生物进行的从外部可察觉到的有适应意义的活动.动物所进行的一系列有利于他们存活和繁殖后代的活动,都是动物行为.不仅包括身体的运动,还包括静止的姿势、体色的改变或身体标志的显示、发声,以及气味的释放等.如:

求偶行为:伴随着性活动和作为性活动前奏的所有行为表现.求偶行为有吸引异性、防止种间杂交、激发对方的性欲望和选择高质量配偶的生物学功能.

捕食行为:是动物通过各种方式获取生存所需的食物的行为.攻击行为:同种动物个体之间常常由于争夺食物、配偶、领地或巢区而发生相互攻击或战斗.

防御行为:为了保护自己,防御敌害的各种行为都是防御行为.如逃跑、装死、释放臭气、保护色、警戒色、机体防御等.

繁殖行为:与动物繁殖有关的行为.如占巢、求偶、交配、孵卵、哺育等一系列行为.

A、鲸鱼的呼吸,是生物的生理特性,不是有适应意义的活动.因此鲸鱼“喷水”不是动物行为.故符合题意;

B、鸟儿鸣叫,是鸟儿为了吸引异性鸟的注意或与其它同类交流信息,是有适应意义的行为,因此鸟儿鸣叫是动物行为.故不符合题意;

C、狼捕食鹿,是为了获取食物,属于捕食行为;鹿奔跑,是为了保护自己,防御敌害,属于防御行为.故不符合题意;

D、变色动物随环境的变化而改变体色,是为了与环境保持一致,不易被敌害发现,属于防御行为.

故选A.

点评:解答此类题目的关键是动物行为概念、特点.

完形填空
Parents’ blessing will play a great part in the growth of their children. My father wrote me a valuable letter before his death, one part of which always  36 . “I know you will do  37 great that will set you among the very best one day in the future.”
Since I first read his  38  at 12, they have lived in my heart.  39 ,I knew that my dad’s believing in me gave me permission to believe in  40  . “You will do something great.” He didn’t know  41  that would mean, but whenever I felt 42  of myself, I remember my father’s words, and  43  he were here, so I could ask, “Is this what you were  44 about, Dad?”
Many years have passed, and I believe that my father  45 have been proud when I  46 from basic training and became a rescue swimmer. Lately, I’ve come to realize he’d want me to move 47 to what comes next: to be proud of, and believe in someone else.
Yes, it’s time to all of us to  48  writing our own letters to our children. They look to us with the same  49  . “Is this it, Daddy? Am I doing fine?” It’s why every child growing up says, “Watch me!” Our children don’t  50   because they are not afraid to fail. They are only afraid of failing  51___.
Remember to give your children  52   to succeed. If you don’t have children, then write a letter to someone who 53 you. They are waiting for you to believe in them. Trust me, love will be 54  real and their belief in themselves will be greater if you write the words on their hearts: “  55  ! You will do something great.” Not having that blessing from someone they love may be the only thing holding them back.
小题1:
A.picks outB.shows outC.stands outD.turns out
小题2:
A.everythingB.nothingC.anythingD.something
小题3:
A.sentencesB.letterC.wordsD.message
小题4:
A.Growing upB.Turning upC.Bringing upD.Taking up
小题5:
A.himselfB.myselfC.itselfD.themselves
小题6:
A.whoB.howC.whichD.what
小题7:
A.disappointedB.activeC.proudD.upset
小题8:
A.hopedB.wishedC.expectedD.thought
小题9:
A.talking B.doubtingC.dreamingD.discussing
小题10:
A.mightB.wouldC.willD.must
小题11:
A.graduatedB.recoveredC.appearedD.survived
小题12:
A.upB.onC.awayD.in
小题13:
A.stopB.keepC.startD.continue
小题14:
A.demand B.responseC.desireD.question
小题15:
A.hold onB.keep onC.hold backD.take back
小题16:
A.us B.himC.youD.tm
小题17:
A.impressionB.directionC.explanationD.permission
小题18:
A.looks throughB.looks down onC.looks up toD.looks forward to
小题19:
A.moreB.lessC.muchD.little
小题20:
A.Watch out B.Never fearC.Take it easyD.Never mind.
名词解释