{01} People around the country were excited __________ the astronauts came back to the earth safely.
A.unless
B.but
C.until
D.because
解析: 试题分析:考查连词。A. unless除非; B. but但是;C. until直到;D. because因为。句意:全国各地的人们都很激动,因为宇航员安全地返回地球。故D正确。 本题选D。 {02}—People often don"t appreciate what they have, do they? —No, _________ they lose it.
A.if
B.after
C.until
D.when
解析: 试题分析: 句意:——人们经常不会感激他们所拥有的,是吗?——是的,直到失去它们的时候。A如果;B在……之后;C直到……时候;D当……时候。根据上句可知此处是省略,补充完整应该是people often don’t appreciate what they have until they lose it .答案选C。 本题选C。
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