问题
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The purpose of the experiment introduced in the last paragraph is______.A.to prove that th
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In the passage the writer seems to ______A.prove that science is a successful course in sc
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The connection of Singapore with high levels of short-sightedness is to prove that______.A
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Arabic language is one of the worlds most widely used languages. It is the officer langua
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According to the author, scientists______.A.have already proved that coffee is good for hu
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No one can prove that the earth _____ not round.A.is beingB.is to beC.isD.has been