Mr. Anderson came _______ taxi. [ ]
A. of
B. from
C. at
D. by
答案:D
This is _______ picture I have told you about. Isn’t it _______ beautiful one ?
A.the ; the
B.a ; a
C.the ; a
D.a ; the
运行中PT断线时,PT的推拉必须使用(),操作人员必须穿()、戴绝缘手套,并注意()。