【题目】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Winter begins in the north on December 22nd.People and animals have been doing what they always do to prepare for the colder months, squirrels, for example, have been busy gathering nuts from trees. 【1】

They examined differences between red squirrels and gray squirrels in the American state of Indiana. The scientists wanted to know how these differences could affect the growth of black walnut(黑胡桃)trees.2 The black walnut tree is also a central part of some hardwood forests.

Rob Swihart of Purdue University did the study with Jake Goheen, a former Purdue student nowat the University of New Mexico. The two researchers estimate that several times as many walnuts grow when gathered by gray squirrels as compared to red squirrels.Gray squirrels and red squirrels do not store nuts and seeds in the same way. Gray squirrels bury nuts one at a time in a number of places. 3 So some nuts remain in the ground. Conditions are right for them to develop and grow the following spring. Red squirrels, however, store large groups of nuts above ground.

4 But Professor Swihart says their numbers began to decrease as more forests were cut for agriculture. Red squirrels began to spread through the state during the past century. The researchers say red squirrels are native to forests that stay green all year, unlike walnut trees. They say the cleaning of forest land for agriculture has helped red squirrels invade(涌入)Indiana. 5

A. Gray squirrels are native to Indiana.

B. But they seldom remember where they buried every nut.

C. Red squirrels bury nuts in a different way.

D. The black walnut is the nut of choice for both kinds of squirrels.

E. Jake Goheen calls them a sign of an environmental problem more than a cause.

F. Scientists are worried that they will drive away the gray squirrels.

G. Well, scientists have been busy gathering information about what the squirrels do with the food they collect.

【题目】We all know what a brain is. A doctor will tell you that the brain is the organ of the body in the head. It controls our body's functions, movements, emotions and thoughts. But a brain can mean so much more.

A brain can also simply be a smart person, If a person is called brainy, she is smart and intelligent. If a family has many children but one of them is super smart, you could say, "She's the brains in the family. " And if you are the brains behind something you are responsible for developing or organizing something. For example, Bill Gates is the brains behind Microsoft.

Brain trust is a group of experts who give advice. Word experts say the phrase"brain trust" became popular when Franklin D. Roosevelt first ran for president in 1932, Several professors gave him advice on social and political issues facing the U. S.These professors were called his "brain trust. "

These ways we use the word "brain" all make sense. But other ways we use the word are not so easy to understand. For example, to understand the next brain expression, you first need to know the word“drain." As a verb to drain means to remove something by letting it flow away. So a brain drain may sound like a disease where the brain flows out the ears. But, brain drain is when a country's most educated people leave their countries to live in another. The brains are,sort of,draining out of the country.

However,if people are responsible for a great idea,you could say they brainstormed it. Here,brainstorm is not an act of weather. It is a process of thinking creatively about a complex topic. For example, business leaders may use brainstorming to create new products, and government leaders may brainstorm to solve problems.

If people are brainwashed, it does not mean their brains are nice and clean. To brainwash means to make someone accept new beliefs by using repeated pressure in a forceful or tricky way. Keep in mind that brainwash is never used in a positive way.

【1】According to the text, if you're the CEO of Bai Du you can be called________.

A. the brains behind Bai Du

B. Bai Du's brain trust

C. the brain drain of Bai Du

D. the organ of Bai Du

【2】Why did Roosevelt successfully win the election?

A. Because he was smart at giving advice.

B. Because word experts were popular.

C. Because he got his brain trust.

D. Because he was the brains behind America.

【3Which of the following expression is always used in a negative way?

A. Brain trust B. Brain drain

C. Brainstorm D. Brainwash

【题目】In the face of tragedyyou must of course let yourself feel: Cry without holding back, shake with fear, yell out in anger, accept and follow your feelingsThis is part of the wise approach to tragedy: The Upward Path — the feeling of emotions, the acceptance of them, and the coupling of the emotional mind with wisdomAlong this path, you'll take the experience — no matter how sad or upsetting — as a learning event, just as a11 other points on your journey will prove to beWhile tragic, you must recognize this is still a chance for all involved to growYou should let both sadness and joy, fear and courage, dark and light fill your world, and learn to find your steady, calm center in the midst of the opposing forcesThis is the Upward PathUse the event as a chance to gain balance and discover wisdom — the wisdom of love and of letting go, of non-attachment and non-resistance, and using this experience to eventually help others in need of guidance.

Being able to relate to others who have also experienced tragedy and inspire in them hope — of recovery, and of moving forward — is perhaps the greatest gift you can receive from tragedyTurn the negative into positive, the pain into connectionAfter you've taken appropriate time to be sad, to feel your own pain, you should make it your workyour goal, your purpose to connect with others who need helpShow them how you've experienced feelings, achieved balanceand gained wisdom that you would never have otherwise had the chance to learn.

FEEL, but do not FEED on tragedyRather, let it inspire you to go beyond the person who you were beforeWith demise comes renewal, so let this loss be also your rebirthNo matter how hopeless it seems, no matter how difficult this becomes, you have the power to transform yourself into someone greater than you ever knew you could be.

1When following the Upward Path, the person facing tragedy should _______.

A. free his emotions

B. hold back his feelings

C. fill his world with positive ideas

D. give in to tragedy and all opposing forces

2According to the authorthe greatest gift one gets from tragedy is being able to _______.

A. seek solutions from others

B. forgive others and move on

C. stay calm and resist change

D. understand and help others

3The purpose of the passage is to _______.

A. analyze the causes of tragedy

B. suggest a way of dealing with tragedy

C. tell people how to prevent tragedy

D. encourage people to build friendship after tragedy

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