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According to the passage, the experience of helplessness causes rats to______.A．turn off t
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We learn from the third paragraph that ______.A．London was plagued with rats in the 1950sB
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When centrifuging heavy fuel oil, an important factor to consider is the _____（1) flow rat
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He was hoping to take part in the drivers license test, but his parents ______ that they w
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The prediction of the test is likely to be mistaken due to______.A．the irrelevance of the
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To select whom to bite, the mosquito s sensors may NOT test______.A．the temperature of the
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Peter ______ the drivers test but he was not calm enough in the last minutes.A.can have
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