语篇训练卷(十五)
module 6 integrating skills
ⅰ. 完形填空
it was july 1976. an unmanned spaceship, viking one, had arrived at mars. on july 20th, the spaceship 1 . part of it continued toward a landing on the planet. it fell 2 through the late afternoon mars’ sky.
forty kilometers above the planet, the thin 3 began to slow its fall. six kilometers above the planet a big parachute(降落伞)opened. the landing craft fell more slowly. then, three rocket engines 4 . and the landing craft set down 5 on the surface. 6 in the viking one lander immediately sent a message to the earth. it said, “i am here. i am down safely. i am beginning my work. ”
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