问题
选择题
What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine(疫苗) is tried on volunteers.
A．/；/；/
B．the；the；/
C．the；/；the
D．the；a；the
答案
D
public前加定冠词表示“公众”；第二空表示“一种治疗的办法或药物”，cure是单数可数名词，要加a；第三空的“志愿者” 指接受疫苗试验的志愿者，表特指要加the。