A．accountsB．recordsC．directionsD．collections

He is collecting materials for a book.（英译中)

块操作的英文是（)。A.BLOCKOD OPERATIONB.BLOCKED RECORDSC.BLOCKING FACTORD.BLOCKMARK

【C10】A．combinationsB．connectionsC．co－ordinationsD．collections

A. situationsB. choicesC. directionsD. positions

_________(55)A.organization B.groupC.collectivity

_________(57)A.collected B.distributedC.assigned