單項(xiàng)選擇題All units of measurement are(), because space, time, weight, and other dimensions are not naturally divided into units.

A.objective
B.traditional
C.artificial
D.controversial


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2.單項(xiàng)選擇題I didn't expect that he would take()of my failure to achieve his own goal.

A.chance
B.effect
C.occasion
D.advantage

3.單項(xiàng)選擇題The pioneers()their journey after a short rest.

A.assumed
B.presumed
C.resumed
D.consumed

4.單項(xiàng)選擇題When she retired she did a lot of()work for the Red Cross.

A.valid
B.portable
C.prosperous
D.voluntary

5.單項(xiàng)選擇題What these young men were doing()a threat to the safety of the whole neighborhood.

A.constructed
B.contracted
C.constituted
D.contributed