Question

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.

1. A.
   /；/；/
2. B.
   the；the；/
3. C.
   the；/；the
4. D.
   the；a；the

Answer 1

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。