题目内容
阅读理解
Mad about Mars?把红色火星改造成蓝色的“生命天堂”?且看科学家们唇枪舌剑辩得失.
The plan: turn Mars into a blue world with streams and green fields, and then fill it with creatures (生物) from the earth.
This idea may sound like something from a science fiction (科幻小说), but it is actually being taken seriously by many researchers.
This suggested future for the “red planet” will be the main topic for discussion at an international conference hosted by NASA (美国宇航局) this week. Leading researchers as well as science fiction writers will attend the event. It comes as NASA is preparing a multi-billion-dollar Mars research programme.
“Turning Mars into a little earth has long been a topic in science fiction,” said Dr Michael Meyer, NASA's senior scientist for astrobiology (太空生物学), “Now, with scientists exploring the reality, we can ask what are the real possibilities of changing Mars.”
Most scientists agree that Mars could be turned into a little earth, although much time and money would be needed to achieve this goal. But many experts are shocked by the idea.
“We are destroying our own world at an unbelievable speed and now we are talking about ruining another planet,” said Paul Murdin, of the Institute of Astronomy, Cambridge, UK.
Over the past months, scientists have become increasingly confident they will find Martian life forms. Europe and America's robot explorers have found proof that water, mixed with soil, exists in large amounts on the planet.
In addition, two different groups of scientists announced on March 28 that they had found signs of methane (甲烷) in the Martian atmosphere (大气). The gas is a waste product of living creatures and could be produced by microbes (微生物) living in the red planet's soil.
But scientists such as Dr Lisa Pratt, a biologist at Indiana University, say that these microbes will be put in danger by the little earth project.
“Before we have even discovered if there is life on Mars, we are talking about carrying out projects that would destroy all these native life forms, all the strange microbes that we hope to find buried in the soil,”said Dr Pratt.
This view is shared by Monica Grady, a planetary scientist at the Natural History Museum, London. “We cannot risk starting a global experiment that would wipe out the precious information we are looking for,” she said. “This is just wrong.”
1.Turning Mars into a little earth ________.
[ ]
A.is no longer a topic of science fiction stories
B.is now under way
C.is a project whose possibility is being explored
D.is against human interests
2.Which of the following is wrong?
[ ]
A.Recent proof found by robot explorers that water really exists on Mars has brought hope to scientists looking for life on the planet.
B.Methane is a kind of gas that is produced by living creatures.
C.The microbes that exist in Mars' soil could be wiped out by the little earth project.
D.Scientists still don't have a clear idea about Martian life forms.
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