题目

If you are at all worried about your health,you should________medical advice. A.search                       B.seek C.give                         D.receive 答案:B seek“寻求,征求”,seek medical advice此处指征求医生的意见。at all起强调作用,可译为“真的,的确”。3.如图是一个由4个相同的正方体组成的立体图形,它的主视图是(  )A.B.C.D.
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