从正方形铁片,截去2cm宽的一条长方形,余下的面积是48cm2,则原来的正方形铁片的面积是[ ]
A.8cm
B.64cm
C.8cm2
D.64cm2
答案:D
The film, ______ 3 love stories, ______ 3 different cities.
A.consisting of; is set in
B.consists of; is set in
C.consisting of; was set in
D.is consisted of; set in
上颌前磨牙拔除时,为避免断根,以下采取的方法中错误的是()
A.拔除时应控制用力
B.开始时向颊侧摇动
C.向腭侧摇动的力量应小
D.避免使用旋转力
E.用分块拔除法