[单项选择]If our solar system has a Hell, it’s Venus. The air is choked with foul and corrosive sulfur, heaved from ancient volcanoes and feeding acid clouds above. Although the second planet is a step farther from the sun than Mercury, a runaway greenhouse effect makes it hotter indeed. It’s the hottest of the nine plants, a toasty 900 degrees Fahrenheit of baking rocky flats from equator to poles. All this under a crushing atmospheric pressure 90 times that of where you’re sitting now. From the earthly perspective, a dead end. It must be lifeless.
"Venus has nothing," is the blunt word from planetologist Kevin Zahnle of NASA Ames Research Center in Calitfornia’s Silicon Valley. "We’ve written it off."
Yet a small group of advanced life-forms on Earth begs to differ, and theorizes that bizarre microbial ecosystems might have once populated Venus and, in fact, may be there still. Members of this loose band of researchers suggest that their colleagues have water too much on th
A. introduce their findings about Venus
B. promote the exploration of Venus
C. convince others that there used to be lives on Venus
D. criticize other scientists that they are narrow-minded

更多"If our solar system has a Hell, it’"的相关试题:

[单项选择]If our solar system has a Hell, it’s Venus. The air is choked with foul and corrosive sulfur, heaved from ancient volcanoes and feeding acid clouds above. Although the second planet is a step farther from the sun than Mercury, a runaway greenhouse effect makes it hotter indeed. It’s the hottest of the nine plants, a toasty 900 degrees Fahrenheit of baking rocky flats from equator to poles. All this under a crushing atmospheric pressure 90 times that of where you’re sitting now. From the earthly perspective, a dead end. It must be lifeless.
"Venus has nothing," is the blunt word from planetologist Kevin Zahnle of NASA Ames Research Center in Calitfornia’s Silicon Valley. "We’ve written it off."
Yet a small group of advanced life-forms on Earth begs to differ, and theorizes that bizarre microbial ecosystems might have once populated Venus and, in fact, may be there still. Members of this loose band of researchers suggest that their colleagues have water too much on th
A. The atmospheric pressure of Venus is stronger than Mars.
B. Venus attracts more attention and funding than Mars.
C. Venus is closer to the Sun than Mars.
D. Venus looks more beautiful than Mars.

查看答案

[单项选择]

If our solar system has a Hell, it’s Venus. The air is choked with foul and corrosive sulfur, heaved from ancient volcanoes and feeding acid clouds above. Although the second planet is a step farther from the sun than Mercury, a runaway greenhouse effect makes it hotter indeed. It’s the hottest of the nine plants, a toasty 900 degrees Fahrenheit of baking rocky flats from equator to poles. All this under a crushing atmospheric pressure 90 times that of where you’re sitting now. From the earthly perspective, a dead end. It must be lifeless.
"Venus has nothing," is the blunt word from planetologist Kevin Zahnle of NASA Ames Research Center in Calitfornia’s Silicon Valley. "We’ve written it off."
Yet a small group of advanced life-forms on Earth begs to differ, and theorizes that bizarre microbial ecosystems might have once populated
A. it is not so close to the Sun as Mercury
B. many volcanoes spread the whole planet
C. it is covered by a thick layer of cloud
D. greenhouse effect is uncontrollable on it

查看答案

[单项选择]A glimpse（）our solar system reveals the neighborhood outside the sun’s influence is stranger than expected.
A. into
B. at
C. by
D. beyond

查看答案

[简答题]We suppose you are also interested in our Haier air conditioners, which are of the same quality as Haier refrigerators, because the prices are quite competitive as compared with those other suppliers. For detailed specifications, please refer to the catalogue enclosed. We hope that you will place a trial order with us.

查看答案

[填空题]Our identity has a major effect on our communication.

查看答案

[单项选择]That our environment has little to do with our abilities, characters and behavior （）central to his theory.
A. is
B. are
C. has been
D. have been

查看答案

[多项选择]Our company has a long tradition. Our letters look old-fashioned. We are trying to modernize the company’s image. All our correspondence should be word-processed.
______

查看答案

[单项选择]

During its formative years, the inner solar system was a rough-and-tumble place. There were a couple of hundred large objects flying around. Moon-size or bigger, and for millions of years they collided with one another. Out of these impacts grew the terrestrial planets—Mercury, Venus, Earth with its Moon, and Mars—and the asteroids.
Scientists have thought of these collisions as mergers: a smaller object (the impactor) hits a larger one (the target) and sticks to it. But new computer modeling by Erik Asphaug and Craig B. Agnor of the University of California, Santa Cruz, shows that things weren’t that simple. "Most of the time, the impactor and the target go off on their merry ways," Dr. Asphaug said. About half the collisions are these hit-and-nm affairs. Now the two researchers and a colleague, Quentin Williams. have done simulations to study the effects of these collisions on the impactors. They are not pretty.
"The impactors su
A. these elements are not suitable to exist in these meteorites
B. these elements are lost during the medical changes during collision
C. their crest and cover have been stripped off
D. they are planetoid remnants

查看答案

我来回答:

提交