题干
It’s ____ comfort to know that so many people are donating money and food to the people in need.
A：/, the
B：a, the
C：a, /
D：/, a
答案(点此获取答案解析）
C
A：/, the
B：a, the
C：a, /
D：/, a
=
. 将函数
的图象向左平移
（
）个单位,所得图象对应的函数为偶函数，则