單項選擇題
讀者學會這些基本概念很重要,否則后面內容的討論理解起來會有困難。 It is important for the reader to learn the basic concepts well, ____ the discussion of later topics will be difficult to understand.
A.and
B.or
C.but
D.for
讀者學會這些基本概念很重要,否則后面內容的討論理解起來會有困難。 It is important for the reader to learn the basic concepts well, ____ the discussion of later topics will be difficult to understand.
A.and
B.or
C.but
D.for