人与类人猿分界的标准是 [ ]
A.脊柱弓形
B.四肢健壮
C.盆骨变长
D.直立行走
答案:D
—Where is the library?
—It’ s the hospital.
A. in front
B. in front of
C. in the from of
D. in the front
扑救液体火灾时,应该使用灭火器扑救,不能用水扑救或用其他物品扑打。