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填空题：24.小明设计的电磁健身器的简化装置如图所示，两根平行金属导轨相距l=0.50m，倾角θ=53°，导轨上端串接一个0.0
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下列各组句子中，加点词的意义和用法相同的一组是（3分）
下列各组句子中，加点词的意义和用法相同的一组是（3分）
39.
39. A．learning B．working C．satisfying D．relaxing
D The technology is great. Without it we wouldn’t have been
D The technology is great. Without it we wouldn’t have been able to put a man o
The word “luxury” in Paragraph 3 means ______.
The word “luxury” in Paragraph 3 means ______.A．something rare but not pleasant
A man-made tail is created for Grace to________.
A man-made tail is created for Grace to________.A．let her recover faster B．make