He eats ______ healthy food. [ ]
A. lot of
B. a lot of
C. any
D. a lots of
答案：B
终生具有造血功能的骨髓位于[ ]
A．骨髓腔内
B．骨松质内
C．骨密质内
D．骨膜内
The apples were divided______according to the age and size of the children.
A．equally
B．approximately
C．proportionately
D．sufficiently
