Imagine trying to carry a hot potato in your ___4___.

I had the greatest difficulty ______ (imagine) in trying to persuade my employer to give up his costly plan.

The word "dry" in the sentence "It's hard to imagine a drier subject." (last paragraph) can be replaced by ______.

A．not wet and moist

B．difficult

C．obscure

D．dull

He is trying all kinds of material to learn______ used.

A．what of them can be

B．that they can be

C．which of them can be

D．which of them be

The sentence "You can pick up what ever strikes your fancy" probably means ______.

A．you can choose whatever you like

B．you can choose whatever you think about

C．you can choose as much food as you imagine possible

D．you can choose any kind of attractive food

time trying to be considerate.We imagine our friends (1) a gift that is impressive,expensive,and sentimental. We imagine the look of happinessand surprise on their faces and the warmth we feel. (2) .But there’s something thatthe most sentimental-gift-givers tend not to think too much about: (3) the gift is practical in the first place.

(4) , practicality seems like an enemy of great gift giving. Beautiful jewelry, lovely watches, perfect rugs, finely crafted kitchen hardware: These things(5) great gifts because they communicate something beyond practicality. Theycommunicate that the giver cares.

But do the receivers care？ Often,no. "Gift receivers would be (6) ifgivers gave them exactly what they requested (7) . attemptingto be&39;thoughtful and considerate&39; by buying gifts they did not explicitly request" to surprisethem, the researchers write. Their clever paper asks givers and receivers to (8) gifts from two perspectives: desirability (e.g. the cost of a coffee maker) and feasibility(e.g. the (9) of the coffee maker).Across several experiments, theyfind that givers consistently give gifts based on desirability and receivers (10) favor gifts based on feasibility .

A.to open

B.opening

C.have opened

D.opened

are on the wrong side of doors. The shift gear (变速器) in your car is in the wrong place. Handles on tin openers are on the wrong side and turn the wrong way.

Twenty-five million Americans wake up every day in just such a sorry situation. They are one in ten of us who are left-handed and must face the world designed for the right-handed majority.

Why we are left or right-handed remains one of the greatest unsolved mysteries of science. We know that nearly two out of three lefties are men and that left-handedness runs in families. According to one study almost half of the children of two left-handed parents will be left-handed. The Scots-Irish family Kerr produced so many left-handers that in 1470 the family built its house stairway with a reverse twist.

On the other hand, heredity (遗传) alone cannot explain lefties. At least 84 percent of them are born of two right-handed parents. And in 12 percent of twins, one will be right-handed, the other left.

Perhaps the greatest puzzle of all is not why some people are left-handed, but rather why so few are. In fact, almost equal numbers of individuals will favour either the right or the left. However, scientists are trying to set things right and they are beginning to study the many ways left-handers differ from right-handers by considering how their brains work.

How many of the Americans are left-handers？

A．10%.

B．12%.

C．50%.

D．84%.

听力原文： Why do we cry？ Can you imagine life without tears？

Not only do tears keep your eyes lubricated, they also contain a substance that kills certain bacteria so they can't infect your eyes. Give up your tears and you lose this on-the-spot defence.

Nor would you want to give up the flood of extra tears you produce when you get something physical or chemical in your eyes. Tears are very good at washing this irritating stuff out.

Another thing you couldn't do without your tears is cry - from joy, anger, or sadness.

Humans are the only animals that produce tears in response to emotions. And most people say a good cry makes them feel better.

Many scientists, therefore, believe that crying somehow helps us cope with emotional situations. Tear researcher William Frey is trying to figure out how it happens.

One possibility, he says, is that tears discharge certain chemicals from your body, chemicals that build up during stress. "When people talk about 'crying it out,' I think that might actually be what they are doing," he says.

If Frey is right, what do you think will happen to people who restrain their tears？ Boys, for example, cry only about a quarter as often as girls once they reach their teenage years. And we all cry a lot less now than we did as babies.

Could it possibly be that we face less stress？ Maybe we've found other ways to deal with it. Or maybe we just feel embarrassed.

(33)

A．Why people hold back their tears.

B．Why people cry.

C．How to restrain one's tears.

D．How tears are produced.