问题
选择题
As Susan stared at ______ piles of plastic in her recycling bin, ______ strong sense of responsibility made her stick to her recycling work.
A．不填；不填
B．不填; a
C．the ; a
D．the; the
答案
答案：C
题目分析：句意：当苏珊盯着垃圾箱里许多的塑料时，一种强烈的责任感使她坚持下了她的回收工作。由句意可知，题干中第一空表特指，需用定冠词the,第二空是泛指，所以用a。故C正确。
考点: 考查冠词的用法。