问题
选择题
It shows that a knowledge of first aid can ______________.
A．make a difference
B．fall ill
C．squeeze out
D．put its hands on
答案
答案：A
考查短语辨析。make a difference 有意义，有所不同，fall ill 生病，squeeze out挤出，put its hands on着手工作，句意：表明急救知识会有意义。所以选A。