1.(2016·江苏高考,31)His comprehensive surveys have provided the most ________ statements of how,and on what basis,data are collected.
A.explicit B.ambiguous
C.original D.arbitrary
A [考查语境选词。句意:数据如何收集以及是基于什么收集的,他全面详尽的调查提供了最明确清晰的(explicit)说明。A项explicit意为“清楚明确的,直截了当的”,符合语境。ambiguous模棱两可的,不明确的;original起初的,首创的;arbitrary武断的。]