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23.D mlast與不定式的完成時連用表示對過去發生的事持肯定態度的推斷.在疑問句中用can.在持否定態度的推斷時用can not.for a moment表示一個動作延續了一會兒.而for the moment則表示“目前,暫時 . 查看更多

 

題目列表(包括答案和解析)

May : Happenings from the Past

May 5 , 1884

Isaac Murphy , son of a slave and perhaps the greatest horse rider in American history, rides Buchanan to win his first Kentucky Derby. He becomes the first rider ever to win the race three times.

May 9 , 1754

Benjamin Franklin’s Pennsylvania Gazette produces perhaps the first American political cartoon , showing a snake cut in pieces , with the words “Join or Die” printed under the picture.

May 11 , 1934

The first great dust storm of the Great Plains Dust Bowl, the result of years of drought (干旱) , blows topsoil all the way to New York City and Washington , D. C.

May 19, 1994

Jacqueline Lee Bouvier Kennedy Onassis, former first lady and one of the most famous people of the 1960s, died of cancer in New York City at the age of 64.

May 24, 1844

Samuel F. B. Morse taps (輕敲) out the first message, “What hath God wrought,” over the experimental long-distance telegraph line which runs from Washington, D. C, to Baltimore, Md.

We know from the text that Buchanan is _______________.

   A. Isaac’s father

   B. a winning horse

   C. a slave taking care of horses

   D. the first racing horse in Kentucky

What is the title of the first American political cartoon?

   A. Join or Die

   B. Pennsylvania Gazette

   C. What Hath God Wrought

   D. Kentucky Derby

In which year did the former first lady Jacqueline die?

   A. 1934            B. 1960           C. 1964           D. 1994

Which of the following places has to do with (與...有關)the first telegram in history?

   A. Washington, D. C.

   B. New York City

   C. Kentucky

   D. Pennsylvania

查看答案和解析>>

從A、B、C、D中找出其劃線部分與所給單詞的劃線部分讀音相同的選項。

1.action       A.adapt            B.actress          C.agent       D.amount

2.apologise    A.case             B.course           C.raise            D.service

3.speech      A.church            B.stomach              C.technology   D.machine

4.graph       A.daughter          B.telephone        C.fright           D.though

5.scream      A.breast            B.break            C.spread           D.defeat

 

查看答案和解析>>

Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US.

When 40 per cent of Hawaii's US$14 million-a-year papaya (木瓜)industry was destroyed by a virus five years ago, work began on creating genetically engineered (轉基因的) trees.

Researchers successfully introduced seeds that were designed to resist the virus. Since then, more and more people have been testing genetically engineered trees.

Some researchers put special bacteria into trees to help them grow faster and produce better wood. Others are trying to create trees that can clean polluted soil.

Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper.

The Pentagon (五角大樓) even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack.

So far, the poplar, eucalyptus (楊樹與桉樹), apple and coffee trees are among those being engineered. All this can be done today because we have a better understanding of tree genomes (基因組).

However, some people fear that the genetically engineered trees will cause dangerous results. They are worried that the new trees will breed with natural species and change the balance of the forest environment.

"It could be destructive," said Jim Diamond, an environmentalist. "Trees are what is left of our natural environment and home to many endangered species."

But researchers insist that science could give nature a fighting chance against both natural and man-made dangers.

They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled.

Which kind of tree is not the ones that scientists are planting in the US?

A. Trees that worms can't hurt.

B. Trees that can protect themselves at a chemical attack.

C. Trees that can resist wind better.

D. Genetically engineered trees.

What caused the American scientists to work on special trees?

A. They think science could give nature a fighting chance against both natural and        man-made dangers.

B. Great numbers of trees have been lost due to attacks by viruses.

C. Researchers successfully introduced seeds designed to resist the virus.

D. Tree genomes are mapped out so scientists know how to improve trees.

Which of the following was probably the first kind of trees being engineered?

A. Papaya.                    B. Pine.                 C. Apple.                      D. Poplar.

Why did critics think engineered trees dangerous? Because _______.

A. these trees can destroy the balance of nature

B. everything except trees has been genetically engineered

C. trees are home to many endangered species

D. these trees may affect normal trees

查看答案和解析>>

從A、B、C、D四個選項中,找出其劃線部分與所給單詞的劃線部分讀音相同的選項,并在答題卡上將該項涂黑。

例: pen

     A.  restore    B. theme     C. effect     D. respect

答案是D

country

  A. pound        B. proud      C. soup       D. enough

breathe

A. worthy        B. thought     C. south     D. tooth

pleasant

A. license        B. escape      C. design    D. house

express

A. explanation    B. experience   C. exercise   D. exhibition

studio

A. study         B. funny       C. plus    D. reduce

查看答案和解析>>


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