There is no doubt that IT playsimportant role as a new teaching tool in this era oftechnol

问题补充：

There is no doubt that IT playsimportant role as a new teaching tool in this era oftechnology.

A. an; \

B. \; the

C. an ; the

D. \; \

答案：

(答案→)A. an; \

B. \; the

C. an ; the

D. \; \

解析：句意：毫无疑问，作为一种新的教学工具，IT在这个科技时代起着重要作用。这里that后引导的是同位语从句，第一空是固定短语play an important role起着重要作用；technology是不可数名词，前面不需要冠词，故选A。

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