问题
选择题
—These Maths problems are too hard to ______. Can you help me?
—There are many ways, but the most important is to try your best.
A．work out
B．come out
C．put out
D．look out
答案
答案：A
A 考查短语辨析。work out“计算出，解出”；come out“开花，出版”；put out“扑灭”；look out“小心”；根据句意可知，答案选A。