“Chew the cud” means that ______ .
think over or consider
举一反三
内容
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You may feel much better if you chew some _______.
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（）不是S7-200系列PLC中的计数器。 A: CTU B: CUD C: CTUD D: CTD
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When I eat solid food.I have to ______ it. A: bite B: chew
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Identify Sensory Expressions I chew noisily and happily like a puppy at a food bowl.
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下列属于西门子S7-200系列PLC计数器的有() A: CUD B: CTU C: CTD D: CTUD