The Harvard School of Public Health experts found that there was ______ relation between concentrations of chemical deposits in blood and immunity.
A．no direct
B．an unilateral
C．a direct
D．an unpredictable

未分类题Why are cinemas moving rapidly into digital screens according to the author?A．Because digital screens can bring owners of cinemas much more profits.B．Because owners of cinemas are in favor of new high technology devices.C．Because digital screens can give film viewers a better picture quality.D．Because more and more 3D films like Avatar are released in recent years.

未分类题What makes the digital screens possible, according to the passage?A．Digital light processing technology.B．Use of millions of tiny mirrors on the chip.C．The chip capable of moving thousands of times per second.D．The American movie entitled Avatar made in Hollywood.

未分类题【T10】A. WATCH B. INFORMATION C. WITH A. ASSOCIATED【T7】______ A 22-MINUTE REDUCTION IN THEIR LIFE EXPECTANCY B. LIVED AN AVERAGE 4. 8 YEARS LESS THAN THOSE WHO DIDN'T【T8】______ ANY TELEVISION C. WHEN THEY COLLECTED TV VIEWING【T9】______ SITTING IN FRONT OF THE TELEVISION MAY BE RELAXING, BUT SPENDING TOO MUCH TIME IN FRONT OF THE TV MAY TAKE YEARS OFF YOUR LIFE. THAT'S WHAT AUSTRALIAN RESEARCHERS FOUND,【T10】______ FROM MORE THAN 11, 000 PEOPLE OLDER THAN 25 YEARS. THE STUDY FOUND THAT PEOPLE WHO WATCHED AN AVERAGE SIX HOURS OF TV A DAY【T11】______ . ALSO, EVERY HOUR OF TV THAT PARTICIPANTS WATCHED AFTER AGE 25 WAS【T12】______ THE MORE TV YOU WATCH, THE LESS PHYSICALLY ACTIVE YOU ARE. AND THE LESS EXERCISE YOU GET, THE MORE LIKELY YOU ARE TO DEVELOP DISEASES SUCH AS DIABETES OR HEART PROBLEMS.

未分类题The mayor has spent a handsome amount of time in his last term working to bring down the tax rate.A．considerableB．moderateC．sufficientD．plenty

未分类题【T16】A. BETWEEN B. IMITATE C. ACCELERATE D. OTHERWISE PHRASES: A. ENABLING THE BIRD TO【T13】______ B. IT【T14】______ COULD C. WOULD BE DIFFICULT TO【T15】______ D. FROM【T16】______ ITS FEATHERS THE EMPEROR PENGUIN TRAPS AIR IN ITS FEATHERS. NOT ONLY DOES THIS INSULATE THE BIRD AGAINST EXTREME COLD BUT IT ALSO ENABLES IT TO MOVE TWO OR THREE TIMES FASTER THAN【T17】______ HOW? MARINE BIOLOGISTS HAVE SUGGESTED THAT IT DOES SO BY RELEASING TINY AIR BUBBLES【T18】______ . AS THESE BUBBLES ARE RELEASED, THEY REDUCE FRICTION ON THE SURFACE OF THE PENGUIN'S WINGS,【T19】______ . INTERESTINGLY, ENGINEERS HAVE BEEN STUDYING WAYS TO MAKE SHIPS GO FASTER BY USING BUBBLES TO REDUCE FRICTION AGAINST THEIR HULLS(船身). HOWEVER, RESEARCHERS ACKNOWLEDGE THAT FURTHER INVESTIGATION IS CHALLENGING BECAUSE 'THE COMPLEXITY OF PENGUIN'S WINGS【T20】______ '.

未分类题【T11】A. WATCHING TV B. HIRE THEM C. SO PHRASES: A. THAT THE COMPANIES THAT【T7】______ WANT MONEY B. THAT COULD BE SPENT【T8】______ C. AND UNDERSTANDABLY【T9】______ CHILDREN ARE A SPECIAL TARGET OF ADVERTISERS,【T10】______ YOUNG PEOPLE ARE SHOPPING AND SPENDING MORE THAN EVER BEFORE. RESEARCHERS SUGGEST THAT CHILDREN WHO ARE HIGHLY INVOLVED IN CONSUMER CULTURE ARE MORE PRONE TO CHILDHOOD DEPRESSION AND ANXIETY AND HAVE WORSE RELATIONSHIPS WITH THEIR PARENTS. THEY SAID: 'YOU CANNOT TOTALLY PROTECT YOUR KIDS FROM ADVERTISING BECAUSE IT IS EVERYWHERE. SO YOU CAN EXPLAIN TO YOUR KIDS THAT ADVERTISERS HAVE AN AGENDA AND【T11】______ THEY DON'T HAVE OUR BEST INTERESTS IN MIND. ' THEY ALSO SUGGEST THAT FAMILY SHOULD WATCH VERY LITTLE TELEVISION. YOU CAN FILL THE TIME【T12】______ WITH OTHER ACTIVITIES, SUCH AS READING AND PLAYING GAMES TOGETHER.

未分类题Im in a position to think about my future and plan it a little more rather than just waiting for what happens.A．used toB．unwilling toC．able toD．glad to

未分类题【T19】A. BETWEEN B. IMITATE C. ACCELERATE D. OTHERWISE PHRASES: A. ENABLING THE BIRD TO【T13】______ B. IT【T14】______ COULD C. WOULD BE DIFFICULT TO【T15】______ D. FROM【T16】______ ITS FEATHERS THE EMPEROR PENGUIN TRAPS AIR IN ITS FEATHERS. NOT ONLY DOES THIS INSULATE THE BIRD AGAINST EXTREME COLD BUT IT ALSO ENABLES IT TO MOVE TWO OR THREE TIMES FASTER THAN【T17】______ HOW? MARINE BIOLOGISTS HAVE SUGGESTED THAT IT DOES SO BY RELEASING TINY AIR BUBBLES【T18】______ . AS THESE BUBBLES ARE RELEASED, THEY REDUCE FRICTION ON THE SURFACE OF THE PENGUIN'S WINGS,【T19】______ . INTERESTINGLY, ENGINEERS HAVE BEEN STUDYING WAYS TO MAKE SHIPS GO FASTER BY USING BUBBLES TO REDUCE FRICTION AGAINST THEIR HULLS(船身). HOWEVER, RESEARCHERS ACKNOWLEDGE THAT FURTHER INVESTIGATION IS CHALLENGING BECAUSE 'THE COMPLEXITY OF PENGUIN'S WINGS【T20】______ '.

未分类题Comment 1 suggests that______.A．parents may influence children's thinkingB．persistent parental involvement is a mustC．parents should leave their children aloneD．kids should be kids after all

未分类题Which of the following is NOT one of the health benefits of carbohydrates?A．Prevention of cancer.B．Prevention of stroke.C．Prevention of heart disease.D．Prevention of fiber reduction.

未分类题【C5】A．make forB．take upC．workoutD．lead to

未分类题Security guards dispersed the crowd that had gathered around the Capitol.A．arrestedB．stoppedC．scatteredD．watched

未分类题【T1】A.PITCH IN B.AGENDA C.RECYCLED A.A GREATER DEMAND FOR THE【T1】______MATERIALS B.SEEMS TO BE ON THE【T2】______ C.FEELS MOVED TO【T3】______AND HELP WE HEAR IT A LOT IN THE NEWS THESE DAYS: 'RECYCLE NEWSPAPERS AND SAVE A TREE. COLLECT BOTTLES AND CANS SO THEY CAN BE REUSED IN THE MANUFACTURING OF NEW PRODUCTS. PROTECTING OUR DELICATE ENVIRONMENT【T4】______OF POLITICIANS, GOVERNMENT LEADERS, AND CITIZENSIN MANY PARTS OF THE WORLD TO SHOW SUPPORT FOR MOTHER NATURE. THE CONCEPT OF GREEN CONSUMERISM HASGAINED MOMENTUM MORE AND MORE OVER THE LAST DECADE, AND THE PUBLIC【T5】______HOWEVER, THREE ESSENTIAL KEYS NEEDED POWER THIS MOVEMENT INCLUDE A MORE INFORMED PUBLIC,THE DEVELOPMENT OF IMPROVED TECHNOLOGY, AND【T6】______.此题为多项选择题。

未分类题【T14】A.ALL OF THAT B.AS IF IT WERE C.FRESH WATER SUPPLY D.IN THIS FIELD A.A LIMITED【T13】______ B.SO THAT IT CAN BE USED AGAIN JUST【T14】______FROM A SPRING C.AND WE CANNOT EVEN USE【T15】______ D.EXPERIMENTS HAVE ALREADY BEEN DONE【T16】______ THE WORLD IS NOT ONLY HUNGRY, IT IS ALSO THIRSTY FOR WATER. IT SEEMS THERE IS PLENTY OF WATER, BUT ABOUT 97% OF THIS HUGE AMOUNT IS SEA-WATER, OR SALT WATER. MAN CAN ONLY DRINK AND USE THE OTHER 3% FRESH WATER.【T17】______, BECAUSE SOME OF IT IS IN THE FORM. OF ICEBERGS AND GLACIERS. EVEN WORSE, SOME OF IT HAS BEEN POLLUTED. AT THE MOMENT, HIS SMALL AMOUNT OF FRESH WATER IS STILL ENOUGH FOR US. HOWEVER, OUR NEED FOR WATER IS INCREASING RAPIDLY. ONLY IF WE TAKE STEPS TO DEAL WITH THIS PROBLEM NOW, CAN WE AVOID A SEVERE WORLDWIDE WATER SHORTAGE LATER ON. ONE OF THE USEFUL STEPS WE CAN TAKE IS TO STOP UNLIMITED USE OF WATER.【T18】______, HOWEVER, WOULD HAVE A BAD EFFECT ON AGRICULTURE AND INDUSTRY. IN ADDITION TO STOPPING WASTING OUR PRECIOUS WATER, ONE MORE USEFUL STEP WE SHOULD TAKE IS TO DEVELOP WAYS OF REUSING IT.【T19】______, BUT ONLY ON A SMALL SCALE. TODAY, IN MOST LARGE CITIES, WATER IS USED ONLY ONCE AND IT EVENTUALLY RETURNS TO THE SEA OR RUNS INTO UNDERGROUND STORAGE TANKS. BUT IT IS POSSIBLE TO PIPE WATER THAT HAS BEEN USED TO A PURIFYING PLANT. THERE IT CAN BE FILTERED AND TREATED WITH CHEMICALS【T20】______.

未分类题【T19】A.ALL OF THAT B.AS IF IT WERE C.FRESH WATER SUPPLY D.IN THIS FIELD A.A LIMITED【T13】______ B.SO THAT IT CAN BE USED AGAIN JUST【T14】______FROM A SPRING C.AND WE CANNOT EVEN USE【T15】______ D.EXPERIMENTS HAVE ALREADY BEEN DONE【T16】______ THE WORLD IS NOT ONLY HUNGRY, IT IS ALSO THIRSTY FOR WATER. IT SEEMS THERE IS PLENTY OF WATER, BUT ABOUT 97% OF THIS HUGE AMOUNT IS SEA-WATER, OR SALT WATER. MAN CAN ONLY DRINK AND USE THE OTHER 3% FRESH WATER.【T17】______, BECAUSE SOME OF IT IS IN THE FORM. OF ICEBERGS AND GLACIERS. EVEN WORSE, SOME OF IT HAS BEEN POLLUTED. AT THE MOMENT, HIS SMALL AMOUNT OF FRESH WATER IS STILL ENOUGH FOR US. HOWEVER, OUR NEED FOR WATER IS INCREASING RAPIDLY. ONLY IF WE TAKE STEPS TO DEAL WITH THIS PROBLEM NOW, CAN WE AVOID A SEVERE WORLDWIDE WATER SHORTAGE LATER ON. ONE OF THE USEFUL STEPS WE CAN TAKE IS TO STOP UNLIMITED USE OF WATER.【T18】______, HOWEVER, WOULD HAVE A BAD EFFECT ON AGRICULTURE AND INDUSTRY. IN ADDITION TO STOPPING WASTING OUR PRECIOUS WATER, ONE MORE USEFUL STEP WE SHOULD TAKE IS TO DEVELOP WAYS OF REUSING IT.【T19】______, BUT ONLY ON A SMALL SCALE. TODAY, IN MOST LARGE CITIES, WATER IS USED ONLY ONCE AND IT EVENTUALLY RETURNS TO THE SEA OR RUNS INTO UNDERGROUND STORAGE TANKS. BUT IT IS POSSIBLE TO PIPE WATER THAT HAS BEEN USED TO A PURIFYING PLANT. THERE IT CAN BE FILTERED AND TREATED WITH CHEMICALS【T20】______.