{01}__________ printed, this science fiction will be popular among the students.
A.Before
B.Unless
C.Although
D.Once
解析:考查连词的用法。Before在……之前,Unless除非,Although虽然,Once 一旦,句意:一旦这部科幻小说被印刷,它将在学生中很受欢迎。故选Once,Once后省略了it is 。 本题选D。 {02}There is no doubt _________ the world climate has been changing in recent years.
A.that
B.what
C.if
D.whether
解析:考查固定句型:There is no doubt that 毫无疑问做某事。句意:毫无疑问世界气候在最近几年一直在变化。故选A。 本题选A。 {03}As the visiting prime minister puts, China’s influence in the world will continue to strengthen ______ its economy grows.
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