Despite their______ of interest,Fleming kept trying to develop the chemical ______ it would be safe and effective.
第二部分 英语知识应用(共两节,满分30分)第一节 单项选择(共20小题,每小题0.5分,满分10分)______ man may usually be known by the books he reads as well as by ______ company he keeps.
I _______ the dance performance many times, each giving me a new understanding.
The economic impact study was conducted by a group of _______ selected MBA students at the University of Kansas.
_______ any other species, human populations are shaped by the usual forces of natural selection, like famine, disease or climate.
— I’m terribly sorry to keep you waiting for so long. — _______.