With the advances of technology, plastics have taken the place of many ________

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With the advances of technology, plastics have taken the place of many ________ materials. [ ]

A. conventional
B. optional
C. artificial
D. potential

答案

举一反三

Ordinary woman though she is, she has won the award because she tries every means to make
people _______ of the importance of the environment conservation.[      ]
A. aware
B. careful
C. sensible
D. ambitious

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The government must be very ________ about setting policies and make no decision until they
are quite sure it is the right one.[      ]
A. particular
B. concerned
C. cautious
D. certain

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It is said that Chen Shuibian is ________ to flee from Taiwan because of the campaign against him.[     ]
A. possible
B. perhaps
C. probable
D. likely

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To take exercise indoors is less ________ than in the open air.[     ]
A. fortunate
B. dangerous
C. safe
D. beneficial

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Computer lessons must be ________ to students of all grades, so that they can master this modern
communication and learning tool.[     ]
A. avoidable
B. accessible
C. valuable
D. acceptable

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