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【单选题】
When she visits the Kennedy Space Centre, Victoria will be able to______.A.
send messages to satellites
B.
learn something new about the space
C.
go aboard a spacecraft
D.
operate Mission Control
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【简答题】Junk food is everywhere. We’re eating way too much of it. Most of us know what we’re doing and yet we do it anyway. So here’s a suggestion offered by two researchers at the Rand Corporation: Why not t...
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