23.If you find this item too difficult to ____, it is advisable to leave as it is and move on to the next one.
A.work out
B.work on
C.work for
D.work at
24.We are doing this work in the ___ of reforms in the economic, social and cultural spheres.
A.context
B.contest
C.pretext
D.texture
25.In our team, no person ___ Tom could finish this tough task in such a short time.
A.better than
B.rather than
C.other than
D.more than
26.The city is an important railroad __ and industrial and convention center.
A.conjunction
B.network
C.junction
D.link
27.A qualified teacher should have good manners and __ knowledge.
A.extensive
B.expansive
C.intensive
D.expensive
28.It is reported that many people were hurt when the two buses
A.bumped
B.crashed
C.collided
D.struck
29.Californians and New Englanders speak the same language and __ by the same federal laws.
A.stand
B.conform
C.abide
D.sustain
30.The meeting was ___ over by the mayor to discuss the tax raise in the city.
A.presumed
B.propelled
C.presided
D.pricked