In science fiction we read of flying saucers travel through _____ space, so people want to have ______ better knowledge of the universe.

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

D


解析:

space作“太空；空間”講時，是不可數(shù)名詞，前不需冠詞。have a knowledge of 意為“對……理解/ 熟悉”。如：He has a good knowledge of politics.（他對政治非常熟悉）。故D是正確答案。

練習冊系列答案
相關習題

科目：高中地理 來源： 題型：

　　 Elbert Einstein, for ______ life had once been very hard, was successful later in science .

　　A. whom  B. whose  C. which  D. his

查看答案和解析>>

同步練習冊答案