(The) number of leprosy cases around the world (has been) cut (of) ninety (perce

游客2025-05-11 39

问题 (The) number of leprosy cases around the world (has been) cut (of) ninety (percent) during the past ten years.

选项 A、The
B、has been
C、of
D、percent

答案 C改为by

解析意为“减少了90%”。

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