单选题：Cancer is more treatable if it is detected__________.

题目内容：

Cancer is more treatable if it is detected__________. A．in an early stage.
B．in a late stage.
C．all of a sudden.
D．together with other diseases.

参考答案：

答案解析：

In Paragraph 4 the writer implies that fertile soils are __

In Paragraph 4 the writer implies that fertile soils are __________.A．limited.

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What's the main idea for this passage?A．Drivers should apply road politeness pro

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