A.insupportable
B.experimental
C.centenarian
D.confidentially

A.superior
B.tranquility
C.convenience
D.entertainment

Which aspect of butterflies does the passage mainly discuss?




A.Their adaptation to different habitats
B.Their names
C.Their physical characteristics
D.Their variety

_______(57)




A.unless
B.without
C.although
D.despite

Students suppose to read all the questions carefully and find out the answers to them.




A.suppose
B.all the questions
C.out
D.them

The word intake is closest in meaning to _______ .




A.desire for
B.investment in
C.ingestion of
D.purchase of

What does the passage mainly discuss?




A.Food with fiber
B.Sweets and cavities
C.A healthy diet
D.Tooth decay

You __________ that book last year - it only came out two weeks ago.




A.can't have read
B.mustn't have read
C.shouldn't have read
D.needn't have read

The postman couldn't make out ______ addressed to, so he took it back.




A.the letter
B.who the letter was
C.where the letter was
D.the letter was

The two examples given in the passage illustrate the principle that ______.




A.successful parents always have intelligent children
B.successful parents often have unsuccessful children
C.parents should let the child develop in the way he wants
D.parents should spend more money on the child's education