题目

 He looked rather untidy as there were two buttons _____ from his coat. A. loosing      B. losing       C. off     D. missing 答案:【解析】D. 考查词汇意思,句意为丢失。missing.缺少的符合 ;下列哪项不是保护草原的最佳措施? [    ] A.防止超载放牧         B.兴修草原水利 C.营造草场防护林       D.限制蓄牧业发展
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