单词拼写（每空一词，每小题1分，满分10分）

小题1:Many _____________ (残疾的) people have worked wonders.

小题2:Annie’s __________(协助) changed Helen from a deaf-blind child into a remarkable writer.

小题3:Sunshine is b___________（有益的） to the health.

小题4:When her husband died, she received many letters and calls of ____________ (同情)  .

小题5:The well-known singer was a______________ on the piano by Langlang .

小题6:The ____________ (年度的)death rate in the United States is 11 per100.

小题7:He ____________ (逃离)his village to join the army when he was 17.

小题8:He told the police about the accident as he w____________ it on his way home.

小题9:Education should not be considered to be a ______________(特权) in modern society.

y=kx+b是一次函数，则k为（　　）

A．一切实数

B．正实数

C．负实数

D．非零实数