Question

【题目】This is ____ orange, that is ___ ruler.

A. a, a B. a, an C. an, a D. an, an

Answer 1

【答案】C

【解析】

句意：这是一个桔子，那是一把尺子。orange ['rn(d)]以元音音素开头，前面用不定冠词an；ruler ['rul] 以辅音音素开头，前面用不定冠词a。故答案为C。