地面抹水泥砂浆，为增加砂浆的和易性，可掺入适量的粉煤灰。( )
参考答案：错
Greenland, ＿＿＿＿＿island in the world, covers even two million square kilometers.
A．it is the largest
B．that is the largest
C．is the largest
D．the largest
心搏骤停复苏后最易出现（）。
A.心肌损伤
B.肾衰竭
C.肝功能衰竭
D.损伤
E.消化道出血
