Tourism, _______ it brings in money to a country, can also result in damage to t

题干

Tourism, _______ it brings in money to a country, can also result in damage to the World
Heritage sites there.

A．once

B．while

C．if

D．as

上一题下一题 0.64难度单项选择更新时间:2014-03-07 04:05:17

小学学科试题库

初中学科试题库

高中学科试题库