Varieties of household goods are sold here, ____from babies’ toys to old men’s walking sticks.

A．changing

B．exchanging

C．ranging

D．classifying

张口度的测量是指

A．上、下唇之间的距离

B．上、下前牙的切缘间之距

C．上、下中切牙的切缘间之距

D．上、下切牙之间的距离

E．上、下颌骨之间的距离