Question

【题目】I want to be ______ engineer when I grow up.
A.a
B.an
C.the

Answer 1

【答案】B
【解析】考查冠词。句意：我长大后想成为一名工程师。engineer在此不强调特指，不用定冠词the；且它是以元音音素开头的单词，应用不定冠词an修饰。故选B。