[单项选择]The Martian surface temperature is 100 degrees below zero at night, so that butter put outside will not ______.
A. thaw
B. dissolve
C. melt
D. fuse

[单项选择]The Martian surface temperature is 100 degrees below zero at night, so that butter put outside will not ______ .
A. thaw
B. dissolve
C. melt
D. fuse

[单项选择]Suppose the earth's temperature rose by 3 degrees, ______.
A. great harm would be done to mankind
B. the sea level would go by 10 centimetres
C. all the land in the world would be flooded
D. crops would be unable to grow on the earth

[单项选择]When I took his temperature, it was three degrees above _______.
A. average
B. ordinary
C. regular
D. normal

[单项选择]When I took his temperature, it was two degrees above ______.
A. common
B. normal
C. ordinary
D. regular

[单项选择]If the temperature at the earth's surface is twenty degrees Fahrenheit, the temperature in a coal mine 500 feet below the surface would, in degrees, be _____________.
A. 50
B. 40
C. 30
D. 120

[单项选择]Gauss wanted to establish contact with the Martians by ______.
A. planting trees in triangular shape
B. filling wide ditches with oil
C. building a large mirror
D. making patterns with trees

[单项选择]How to talk to a Martian is an academic question.
A. a theoretical
B. an educational
C. a scholastic
D. a general

[单项选择]

Text 2 After a shaky start, the Martian flotilla that has arrived over the past few weeks is getting down to business. Two of the five craft in it seem to be working perfectly. Two are lost. And a fifth is sick, but undergoing treatment. The most spectacular pictures so far have been provided by Mars Express, the European Space Agency’s contribution to the fleet. On January 28th this reached its final working orbit (which takes it over both poles, and thus allows it to see the whole of Mars over the course of a few days as the planet revolves beneath it). It has, however, been sending back data since shortly after it arrived, and a few days ago its controllers released a series of beautiful photographs, including a stereo image of Valles Marineris, a huge canyon that may have been formed by flowing water. The most scientifically significant result, though, has come from Opportunity, America’s second Mars rover. One of Opportunity’s cameras has photographe
A. could subsist despite the discovery of ice
B. is aroused by the wish to find life there
C. depends largely on the funding of these projects
D. might turn out to be a waste of resources

[单项选择]It is very likely that the Martian will also be ______ to underground existence, for conditions are much more equable underground.
A. adopted
B. acquired
C. admitted
D. adapted