摘要:A.to show B.show C.shows D.be shown

网址:http://m.1010jiajiao.com/timu3_id_2403344[举报]

阅读下列短文,从每题所给的四个选项(A、B、C、D)中,选出最佳选项。

  Why don't birds get lost on their long flights from one place to another? Scientists have puzzled over this question for many years.Now they're beginning to fill in the blanks.

  Not long ago, experiments proved that birds depend on the sun to show them the way during daylight hours.But what about birds that mainly fly at night? Tests with man-made stars have shown that certain night-flying birds are able to follow the stars on their long-distance flights.

  Once such bird-a warbler-had spent its lifetime in a cage and had never flown under a natural sky at night.Yet it showed an inborn ability to use the stars.The bird's cage was put under a man-made star-filled sky.The bird tried to fly in the same direction as its outdoor cousins.Any change in the position of the man-made stars caused a change in the direction of its flight.

  Scientists think that warblers, when flying in daylight, use the sun for guidance.But stars are their main dependence of flying at night.What do they do when stars are hidden by clouds? They find their way by such landmarks as mountains, beaches and rivers.But when it's too dark to see these, the warblers circle helplessly, unable to get their directions.

(1)

The reason why birds don't get lost on long flights ________.

[  ]

A.

is still a secret

B.

is well known

C.

has recently been discovered

D.

has been known for many years

(2)

What does the underlined word "cousins" in paragraph 3 refer to?

[  ]

A.

Stars.

B.

Warblers.

C.

Scientists.

D.

Experiments.

(3)

The experiment with the warbler shows that birds ________.

[  ]

A.

cannot fly at night

B.

will not fly long distances

C.

have to be taught to fly at night

D.

follow the stars when flying at night

(4)

Which may be the best title for the passage?

[  ]

A.

Clever Birds

B.

Night-flying Birds

C.

An Interesting Experiment

D.

Man-made Stars and Warblers

查看习题详情和答案>>
Dear Dad.
Happy birthday to you !
On this special day I'd like to talk to you   a special way.
I don't think I'm good at      you my thoughts face to face. so I'm writing to you to express my love for you.
You're neither rich nor famous, but in my heart, you are one of the greatest       in the world. I'm       you. You have         been interested in fame and wealth (财富 ).  You always work hard to get your work      . The smile on your face shows you're pleased with the family. You take good care of my grandparents. You help me with my schoolwork and go shopping with Mom on Sundays.
In the past ,  I don't care        you were with me or not. Now I am sorry to say I        you my respect ( 尊重   ) before. But I am thankful for what you have done for me. I am quite lucky that I have        a good father. I am happy that now I can let you       how much I love you. You arc successful as a son, a husband. a father and a friend.
I hope you'll  be happy forever
Yours ,
David
小题1:
A.inB.atC.byD.on
小题2:
A.talking B.saying C.speakingD.telling
小题3:
A.businessmenB.manC.menD.worker
小题4:
A.worried aboutB.proud of C.afraid of D.sorry for
小题5:
A.alwaysB.ever C.alreadyD.never
小题6:
A.done B.doing C.doesD.did
小题7:
A.whetherB.thatC.whatD.where
小题8:
A.will show B.don't show C.didn't show D.have shown
小题9:
A.tooB.soC.veryD.such
小题10:
A.to knowB.know C.knewD.Knowing
查看习题详情和答案>>

完形填空

  A good dictionary is an important tool(工具). A dictionary needs to be printed  1 about every ten years. Languages develop (发展) and a good dictionary must  2 these new changes.

  A new English dictionary will only tell you  3 most people use the language today. It will not tell you what is right  4 wrong. It may tell you the right time to use a word. If only  5 people use a word, a dictionary will  6 tell you this or not list (编列) it.

  Every dictionary will tell you many interesting facts. If you type (用打字机打) a word and the word is too long, look it up in your dictionary. All dictionaries show you  7 to break(拆开) a word. And they also show you how a word is spoken.

  Every dictionary, of course, tells you  8 a word means. But some words, like “get” or “take”, may have dozens of meanings. In some dictionaries, the main (主要的) meanings are often listed first. In  9 , the newest meanings are listed last. So before you use your dictionary, you should always  10 the front part. This part explains(解释) how to use it.

1.

[  ]

A.yet
B.also
C.again
D.too

2.

[  ]

A.to show
B.show
C.shows
D.be shown

3.

[  ]

A.how
B.what
C.why
D.if

4.

[  ]

A.and
B.or
C.but
D.not

5.

[  ]

A.a little
B.many
C.a few
D.a lot of

6.

[  ]

A.neither
B.nor
C.both
D.either

7.

[  ]

A.when
B.where
C.why
D.which

8.

[  ]

A.which
B.why
C.how
D.what

9.

[  ]

A.another
B.the other
C.others
D.other

10.

[  ]

A.see
B.look
C.watch
D.read
查看习题详情和答案>>

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网