Many forms of cancer can be cured if detected
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Many forms of cancer can be cured if detected early.
A:discovered B:selected C:operated D:developed
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答案：A
题干意为“如果发现得早，很多癌症都能被治愈。” 句中划线词意为“发现，发觉，查明”。A项discovered意为“发现；偶然撞见；发觉”；例句： We discovered that our luggage had been stolen．我们发觉行李被偷了。B项意为“选择”。C 项意为“做操作；运转；经营”。D项意为“发展”。故选A。