题干
—Do you know how to pronounce this new word?
—Yes. I __________ in the dictionary just now.
—Yes. I __________ in the dictionary just now.
A：looked it u
B：used it u
C：cleaned it u
D：picked it u
答案(点此获取答案解析）
A
与函数
的图象所有交点的横坐标之和为