问题
选择题
Knowing how to give first aid really ______ in case of emergency. It can save lives.
A．makes difference
B．has a difference
C．makes a difference
D．makes the difference
答案
答案：C
考查固定短语。make a difference“有影响，有关系”。句意“为防止紧急情况的出现，了解怎样急救确实很重要。它能拯救生命。”故选C。