Where would you like______? [ ]
A. visit
B. to visit
C. visiting
D. visited
答案:B
--- How can I improve my spoken English?
--- You have to practise ______ as much as you can.
A.speak
B.speaking
C.spoken
D.to speak
尿液的形成过程包括( )的滤过作用的( )的重吸收作用.
A.肾小体、肾小管
B.肾小球、肾小囊
C.肾小球、肾小管
D.肾小球、肾小球