The nature of dark matter is ______ It cannot be seen or detected directly
Astronomers know it is there because of its______ on celestialobjects that can be seen and measured.
But the most dominating force of all in the universe is called dark energy, a recently ______ power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speed.
51 A worry B move C puzzleD reject
52 A understanding B value C pattern D structure
53 A changedB described C designed D shaped
54 A in B for C ofD to
55 A make B keep C set D get
56 A written B called C identified D seen
57 A signed B stressed C acted D played
58 A believe B owe C feel D regard
59 A appearedB carriedC published D contributed
60 A elementB shape C formation D power
61 A with B as C form D beside
62A turned B workedC led D attempted
63 A unknow B interesting C different D visible
64 A form B outcome C effect D source
65 A seized B provenC caught D grasped
参考答案
51 c puzzle:使感到迷惑。几个选项中只有此选项意思符合原文。
52 A 此句的意思是近年来的观察改变了人们对于宇宙是如何演变的基本了解。其他几个选项与原文不符。
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