Question

Exploring ________space is exciting, yet dangerous. There is ________need for both robots and humans for space exploration.

A．the; a

B．a; a

C．/; a

D．/; the

Answer 1

C

試題分析：句意：探索太空是令人興奮的，然而也是危險的，太空探索即需要機器人也需要人類。第一空不填，space是抽象名詞，第二空填a，There is a need for..“有…需求”，所以選C。