第二卷（共35分）

第四部分：写作（共两节，满分35分）

第一节：短文填词：（共10小题，每小题1分，满分10分）

On the one hand, the robots sent to the planets have not yet found

any ______(迹象) of life on Mars, but they have found evidence                           76. __________

that water ______ freely over the planet’s surface millions of years                77. __________

ago. ______ addition, water in the form of ice exists below some                   78. __________

p      of the Martian surface today.                                                           79. __________

On the other hand, d       life on Mars would change the                       80. __________

present view of the Universe and also give a big push toward man’s.

work there. But a group of experts o      by President Barack Obama          81. __________

told him last October that US ______(太空) policy should now focus             82. __________

on sending human beings to Mars instead of ______(又一，再一) moon         83. __________

landing. Michael Griffin, a former head of NASA, believes ______                84. __________

a human trip to Mars could be p       by 2037.                                                 85. __________