A.demonstrateB.imitateC.motivateD.illustrateOur challen……

单项选择题Forests provides （）materials for human activities.

A.crude
B.coarse
C.rough
D.raw

单项选择题Retailers will need to rethink their strategies as（）shoppers demand price-competitive goods.

A.thrifty
B.moist
C.barren
D.digestive

单项选择题The National Institute of Health is discussing ways of tackling the problem of childhood（）.

A.cafeteria
B.membership
C.flavor
D.obesity

单项选择题To （）how the system works，Bruce shows off the prototype of a 3D analysis tool.

A.dedicate
B.distribute
C.demonstrate
D.cultivate

单项选择题We’re firmly（）to the manager’s latest decision to expand overseas market.

A.obtained
B.deleted
C.preserved
D.opposed