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Naturalist: For decades we have known that the tuatara, a New Zealand reptile, have been a
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【B16】A．to having foundB．to have been foundC．to have foundD．to find
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Flying Blue members have the right to use their award miles to______.A．get free ticketsB．v
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As pigeons are trained to get back home, they do not have the power as other migratory bir
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It has long been known that total sleep ______ is 100 percent fatal to rats, yet, upon exa
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The passage mainly aims to______.A．explain why time flies when people having funB．prove ti
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Almanacs in simple form. have been known from the invention of writing.
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