—Guess what? I happened to have met Mark at the party last week．

—If my memory serves me correctly, you two ______ each other for almost ten years．

A．hadn't seen

B．haven't seen

C．didn't see

D．don't see

女性，24岁，体重60kg。双下肢烫伤，部分水疱破损，创面微湿，红白相间，痛觉较迟钝。

首选的胶体液是（）

A.全血

B.血浆

C.低分子右旋糖酐

D.明胶

E.人血白蛋白