30) At last, they ____ get through the mountain in such a heavy rain.
A. can B. could C. are able to D. were able to
C. READING * Fill in each numbered blank with one suitable word or phrase.
Until recently, you may only read in (31) ____ fiction that an ordinary person
could (32) ____ a trip into space. We have heard ideas about holidays to the
Moon, but these were just a story, and everyday flights into space seemed just a
distant (33) ____ .Aspirations of space tourism are remembered in science fiction
works such as Arthur C. Clarke’s A Fall of Moondust and Islands of the Sky. But
now, this fiction could become achievable as major steps are being taken to make
the dream (34) ____ traveling into space (35) ____ a practical reality. On 28 April
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