The chief reason for building space stations was to ______.
provide a cheap, dependable supply of energy from space
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举一反三
- 智慧职教: What ___ used as chief building materials today __ steel and concrete.
- A valid reason for building programs out of functions is______.
- What____used as chief building materials today____steel and concrete. A: have been . . . are B: is . . . are C: are . . . are D: are . . . is
- 1. Money was the chief reason for Steve Jobs to drop out of college. A: 正确 B: 错误
- The main reason for this is that people are living a happier life. A: difficult B: necessary C: simple D: chief
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This narration is organized according to ________ . A: time B: space C: logic D: reason
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中国大学MOOC: In 2013 Shenzhou-10 was launched successfully, _____________ building the Chinese Space Station.
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The students were told not to leave the building, but no reason for this ___ was given. ( ) A: introduction B: implement C: instruction D: implication.
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That space has already been ( ) for building a new hospital. A: allocated B: exposed C: located D: imposed
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CATEGORY A EPIRB’s transmit on frequencies that are monitored by（）. A: orbiting satellites in space B: commercial radio stations C: private，commercial，and military aircraft D: ordinary radio statio