问题 选择题

极地狐比大耳狐的耳朵要小,这样可以(  )

A.不容易被捕食者发现

B.有利于迅速奔跑,寻找食物

C.增加听觉的灵敏成度

D.适应北极寒冷的北极气候

答案

现在生存的每一种生物,都具有与环境相适应的形态结构、生理特征.在北极地区,气候及其寒冷,极地狐的耳朵小,可以减少热量的散失,保持体温,这是对北极寒冷环境的一种适应,也是对自身的一种保护.

故选:D

填空题
完形填空

As time goes on, I am no longer young, I have friends whose mothers have passed away.  I have heard these sons and daughters say they never fully appreciated their mothers   1   it was too late to tell them. I am blessed with the dear mother who is still alive. I   2   her more each day. My mother does not change, but I   3  . As I grow older and wiser, I realize   4   an extraordinary' person she is. How   5   that I am unable to speak these words in her   6 , but they flow easily from my pen.

As a daughter, how to thank her mother for life itself?? For the love, patience and just   7   hard work that go into   8  a child? For running after a toddler (学走步的小孩), for understanding a   9   teenager, for tolerating a college student who knows  10 ? For waiting for the day when a daughter   11   how wise her mother really is?

How does a   12   woman thank a mother for   13   to be a mother? For being ready   14   advice when asked or remaining   15   when it is most appreciated? For not saying, “I told you so,” when she could have said these words  16  ? For being  17  herself-loving, thoughtful, patient, and forgiving? I don' t know how, dear God, except to ask you to bless her as richly as she   18   and to help me live up to the example she has   19 . I pray that I will look as good in the eyes of my children as my mother   20   in mine.

1.A.as             B.that           C.until               D.when

2.A.approve        B.appreciate     C.need               D.resemble

3.A.do             B.have           C.did              D.will

4.A.how            B.that          C.who               D.what

5.A.sad             B.glad           C.comic              D tragic

6.A.absence          B.presence       C.appearance         D.existence

7.A.common        B.plain          C.normal            D.usual

8.A.raising          B.rising           C.developing         D.training

9.A.childish         B.energetic      C.fearless            D.moody

10.A.anything       B.something     C.everything          D.nothing

11.A.detects        B.discovers      C.recognizes          D.realizes

12.A.pretty         B.foolish         C.green           D.grown

13.A.failing        B.intending      C.continuing         D.keeping

14.A.by          B.with           C.for                D.on

15.A.silent        B.quiet          C.cool               D.noiseless

16.A.dozen times   B.a dozen of times C.dozens of times   D.dozen of time

17.A.valuably     B.essentially     C.naturally           D.actually

18.A.devotes      B.deserts        C.deserves            D.desires

19.A.set         B.settled          C.placed             D.fixed

20.A.sees         B.finds           C.is                 D.looks