SincethreeChineseastronautspilotedShenzhouIXtolinkupwithTiangong-1China’sexplorationofouterspacehassteppedintonewera.A./;aB.the;a

Question

 Since three Chinese astronauts piloted Shenzhou IX to link up with Tiangong-1 China’s exploration of _____ outer space has stepped into _____ new era.

A. /; a                            B. the; a                       C. a; the                       D. /; /

Answer 1

A