诊断肠套叠的首选方法是（）
A.B超
B.CT
C.碘水造影
D.钡剂或空气灌肠
E.MRI
参考答案：D
The massive earthquake and tsunamis has killed 350 people in a coastal town in Chile so far, _______ the total death number reported last Sunday．
A．doubled
B．to double
C．doubling
D．having doubled
CDMA系统在UIM卡中存储的信息有：（）
A.用户识别信息和鉴权信息
B.业务信息
C.优选的系统和频段，归属区标识
D.电话号码薄，短信
