题目

Mr Green has worked in Xuzhou since his familyto China years ago.A.has moved B.moved C.moves D.move 答案：【答案】B【解析】句意：自从他的家人多年前搬到中国以来，格林先生一直在徐州工作。考查时态。has moved现在完成时；moved一般过去时；moves一般现在时三单形式；move一般现在时，根据years ago多年前，可知从句用一般过去时，故选B。含糖量20%的糖水中，糖比水少A.75%B.25%C.15%D.80%