更多"NASA had planed to launch its space"的相关试题:
[填空题]
The U.S. space agency, NASA, is planning to launch a satellite that scientists hope will answer fundamental questions about the origin and destiny of our universe. (41) __________.
The prevailing theory of the universe’s origin, the "Big Bang" theory, says all matter and energy were once compressed into a tiny point. The density and resulting temperature were so enormous that, about 13-to-15-billion years ago by current estimates, a mighty explosion flung the matter hurtling outward in all directions. (42) __________.They also ask, is the expansion accelerating Will the universe collapse What is its shape Scientists will seek explanations with NASA’s new Microwave Anisotropy Probe, abbreviated as MAP. (43) __________."MAP will take the ultimate baby picture, an image of the infant universe taken in the fossil light that is still present from the Big Bang," he says. "This glow, this radiation, is the oldest light in the universe. Imprin
[单项选择]A radical new bicycle had its first public showing at the National British Cycling Championships in Shrewsbury last weekend. Based on the gold medal- winning design from the Barcelona Olympics, it is the first commercial mountain bike made of a single piece of carbon fibre.
Bicycles for amateurs have up to now been made of steel, aluminum or magnesium tubes welded together into the conventional "A-frame" shape. But last year, the British competitor Chris Boardman set world records while winning titles in the Olympic cycling pursuit events on a custom-built, carbon-fibre bicycle with lower weight and wind resistance than standard models. Because carbon fibre is born light and extremely strong, it does not need the A-frame shape, saving further weight Carbon fibre can also be moulded in a single piece, avoiding the weakness of welds.
The new bike, which will cost between $ 2000 and $ 3000 when it reaches the shops next month, has the same advantages as the Olympic model, it wei
A. it was made from the gold medal-winning design of the Barcelona Olympics
B. it was the first commercial mountain bike
C. its public showing last weekend aroused many people’s curiosity
D. it was made of one single piece of carbon fibre
[简答题]
Questions 7～10
Beijing had
its coldest morning in almost 40 years and its biggest snowfall since 1951.
Britain is suffering through its longest cold snap since 1981. And freezing
weather is gripping the Deep South, including Florida’s orange groves and
beaches. Whatever happened to global warming
Such weather
doesn’t seem to fit with warnings from scientists that the Earth is warming
because of greenhouse gases. But experts say the cold snap doesn’t disprove
global warming at all— it’s just a blip in the long-term heating
trend.
"It’s part of natural variability," said Gerald Meehl, a
senior scientist at the National Center for Atmospheric Research in Boulder,
Colo. "With global warming", he said, "we’ll still have record cold
temperatures. We’ll just have fewer of them. "
Deke Arndt of
the National Climatic Data Center in Asheville, N. C. , noted that 2009 will
rank among the 10 warmest years for Earth sinc
[单项选择]The newly-discovered medicine had its ______ only on ordinary colds.
A. effect B. affect C. impression D. influence
[简答题]The office desk, as we know it, may have had its day. A large study on the future of work in the UK predicts the rise of the “mobile worker” moving with notebook computer and mobile phone between office, home, hotel, airport or highway service station as the needs of a job demand. Today, more than five million people already spend some time working at home or on the move, according to a recent report. That number will rise dramatically over the coming decades, with mobile work becoming one of the fastest-growing types of employment.
According to the study “Working in the Twenty-First Century”, individuals will not necessarily see themselves as working from home. They could equally be working from the office, but they will be one the move from place to place, working at various times of the say, for much of the week. For a large proportion of workers, work in twenty years’ time will be more about movement than staying in one place.
