--Why do you suggest Mount Lu?
--I believe ________ beauty of nature there will make ________ excellent impression on you.
A./; an
B.the; the
C.the; a
D.the; an
D
考查冠词的用法,第一空是特指:大自然的美所以用the beauty of nature,第二空为固定短语:make an impression on sb 给某人留下印象,中间的形容词excellent发音以元音因素开头,所以用不定冠词an,故选D。