语法与词汇
The increased use of computers in business has been _____ by acostly increase in computer crime.
【正确答案】
A
【答案解析】句意：伴随商务中不断提高的电脑应用而来的是代价高昂 难度：简单的电脑犯罪的增长。be accompanied by随之而来； 伴随。disappointed感到失望。be matched by和……匹配。be witnessed by被见证。故答案选A。Many animals display _____ instincts only while their offspring areyoung and helpless.