While he was investigating ways to improve the telescope, Newton made_______discover which completely changed______ man’s understanding of colour.
A.a, 不填 B.a, the
C.不填，the D.the, a
If you go by _______train, you can have a quite comfortable journey, but make sure you get_______fast one.
A.the; the B./; a
C.the; a D./; /
India attained ________ independence in 1947, after ________ long struggle.
A. 不填； a B. the; a
C. an; 不填 D. an; the
People develop ______ preference for a particular style of learning at ______ early age and these preferences affect learning.
A. a; an B. a; 不填
C. 不填; the D. the; an
We most prefer to say yes to the ______ of someone we know and like.
A. attempts B. requests
C. doubts D. promises
She was put under house arrest two years ago but remained a powerful ________ in last year’s election.
A. symbol B. portrait
C. identity D. statue
