After two years' research，we now have a ________ better understanding of the disease.(2013·全国Ⅱ)
A．very B．far C．fairly D．quite
It is generally believed that teaching is ________ it is a science.
A．an art much as B．much an art as
C．as an art much as D．as much an art as
The businessman boasts to me that I can't find a ________ gold necklace，because his shop deals in the best.
A．good B．better
C．best D．worse
Speaking of all the songs he has written，I think this is probably his ________ one.(2013·全国Ⅱ)
A．better－known B．well－known
C．best－known D．most－known
Of the two coats，I'd choose the ________ one to spare some money for a book.(2010·四川)
A．cheapest B．cheaper
C．more expensive D．most expensive
(2013·安徽，31)If parents have children help with housework, the children will feel needed.________，they will learn to take care of themselves.
A．On the contrary B．In a word
C．That is to say D．What's more
