Scientists have to work hard to keep with modern discoveries and developments.A. company

Scientists have to work hard to keep with modern discoveries and developments.
A. company
B. track
C. touch
D. pace

A. company B. track (答案→)C. touchD. pace解析：keep pace with跟上：1)This horse is too weak to keep pace with the others. 2)I can't help pace with your plan.Keep in touch with与......保持联系；了解（情况）；1)People can keep in touch with each other even when they do leave. 2)I find it very difficult to keep in touch with all the recent developments in my subject.(我觉得很难了解我的科目当前的一切新发展。)Keep company(with)与......相好：Never keep company with dishonest persons.(千万不要和不诚实的人来往。)Keep track of通晓事态，了解动向：I find it difficult to keep track of my old friends.(我很难了解我的老朋友的情况。)keep track of的反义结构是lose track of（失去联系）。以上成语均为考试大纲规定的内容。

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