While he was investigating ways to improve the telescope, Newton made______ discover which completely changed______man’s understanding of colour.
#7612
A
a…不填
B
a…the
C
不填…the
D
the…a
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Susan, _____ university student from European, teacher me _____ art in he spare time.
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A
an; /
B
a; the
C
an; the
D
a; /
(2009山东烟台检测) Hey, please do me favor. I must get some money from ATM machine.
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A
the; a
B
a; the
C
the; an
D
a; 不填
Of all __________ reasons for my decision to become a university professor, my father’s advice was __________ most important one.
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A
the; a
B
不填; a
C
不填; the
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There is no doubt that holding such____ National Day parade will significantly enhance (提高) ____national pride and self-confidence of Chinese People.
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A
a; the
B
a; a
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the; the
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We have every reason to believe that_______2008 Beijing Olympic Games will be_____success.
#10185
A
不填；a
B
the;不填
C
the;a
D
a;a