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

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


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3.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

4.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

6.单项选择题Citric acid can be ()from the juice of oranges,lemons,limes or grapefruit.

A.extracted
B.emerged
C.posted
D.submerged

7.单项选择题When King George(),his brother succeeded him on the throne.

A.abdicated
B.addicted
C.appointed
D.appraised

8.单项选择题His term of office ()at the end of June.

A.exchanged
B.expired
C.explained
D.exported

9.单项选择题The organization are ()food to the earthquake victims.

A.discharging
B.distributing
C.dismissing
D.disregarding

10.单项选择题Our force has been()from the dangerous area.

A.accused
B.deposited
C.withdrawn
D.rectified