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

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

A. company B. track 　C. touch 　D. pace

试题答案

D

keep pace with跟上；keep in touch with与......保持联系;了解(情况); keep company(with)与......相好;keep track of通晓事态，了解动向。