I want jump.[ ]
A. for
B. in
C. to
答案:C
—What do you ____________ your English teacher?
— Wow, she’s very friendly.
A.think of
B.think over
C.think
D.think about
世界范围内使用氟化物防龋,估计人数最多的措施是
A.饮水加氟B.含氟牙膏C.食盐氟化D.局部涂氟E.氟水漱口