大量出血时，最好及时输入：
A．血细胞混悬液
B．血浆增量剂
C．血浆
D．右旋糖酐
E．全血
参考答案：E
Today the forests have almost gone. People must_____down too many trees. [ ]
A. stop froming cutting
B. stop to cut
C. be stopped from cutting
D. be stopped to cut
高速公路上的不停车收费系统通道是哪三个英文字母表示？
