问题
选择题
Doctors believe that only a small number of people ____ of this kind of disease.
A．is in danger
B．is in a danger
C．are in danger
D．are in the danger
答案
答案：C
考查主谓一致。A number of +复数名词作主语谓语用复数形式。处于危险中be in danger of注意danger 前不用任何冠词。医生认为只有一小部分人有危险得这种病。