色素痣出现哪些改变时应警惕恶变的可能（）。
A.长出毛发
B.迅速增大
C.颜色加深、色素不均匀
D.表面自行破溃
参考答案：B, C, D
When I called Mr. Li, he and his wife ________ in the rain.
A．trapped
B．were traped
C．were trapped
D．were trapping
(70) is not a peripheral component or device. The basic input device on a small computer is a (71) .
A．Digital Camera
B．Printer
C．Mouse
D．Driver
