______, the knowledge economy has become the major characteristic of the nationa

游客2024-07-09  12

问题 ______, the knowledge economy has become the major characteristic of the national economy of most developed countries.

选项 A、Once in a while
B、For the time being
C、From time to time
D、Once upon a time

答案 B

解析 此题考查短语。once in a while"偶尔";for the time being"目前,暂时";from time to time"有时,不时";once upon a time"从前"。
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