单项选择 适中0.65 引用1 组卷53
These eighteen-century oil paintings are _______ so well that the visitors are greatly amazed.
| A．preserved | B．protested | C．purchased | D．punished |
19-20高二下·黑龙江哈尔滨·期中
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Financed by taxes collected by the federal government, the WPA created millions of jobs by undertaking the construction of roads, bridges, airports and other public buildings. It kept workers in the job, thus_________ their skills and their self-respect.
| A．to preserve | B．preserving | C．preserved | D．to be preserving |
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