单选题
Most of the employees said that the new software program has been______useful in speeding up the database search process.
A、
consideration
B、
considering
C、
considerable
D、
considerably
【正确答案】
D
【答案解析】
解析：此处应选择修饰形容词useful的副词，故副词(D)considerably(相当地)为正确答案。名词(A)、动名词(B)和形容词(C)都不能修饰形容词。
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