题目

Mr Green asked his students to __________ the new words in the dictionary. A. look at                     B. look up             C. look for            D. look  after 答案：B喜马拉雅山上发现海洋生物化石说明（ ）A．此地区的地壳原来是海洋，后来上升为陆地B．此地区的海洋面积缩小了C．此地区原来是陆地，现在是海洋D．此地区的海洋面积在不断扩大