This term we have new subject—physics. It’s interesting.A. aB. anC. theD. /

问题补充：

This term, we have new subject—physics. It’s interesting.

A. a

B. an

C. the

D. /

答案：

(答案→)A. a

B. an

C. the

D. /

解析：句意：这学期，我们有一门新的科目——物理。它很有趣。修饰new subject单数名词短语，用不定冠词a,故选A。