Though some foreign scientists had a opinion of his new invention, his fellow workers never thought of it.
A. highly; low
B. low; high
C. high; highly
D. poor; highly
网友回答
A. highly; low
B. low; high
(答案→)C. high; highly
D. poor; highly
解析：第一个空该用形容词；第二个空该用副词。Have a high opinion of, think highly of对…评价高。