对神态不清的溺水者应（）.
A、给于流食
B、不给饮食
C、给温热饮料
参考答案：B
The pilot asked all the passengers on board to remain ________ as the plane was making a landing. [ ]
A. seat
B. seating
C. seated
D. to be seating
如果将标志值所对应的权数都缩小为原来的1/10，则算术平均数（）
A.保持不变
B.扩大1/10倍
C.缩小1/10倍
D.无法判断
