题目内容：
下列各组物质中，相互不能发生反应的是
A.常温下，铝与氧气
B.铜与硝酸银溶液
C.氢氧化钠溶液与氯化钡溶液
D.氯化铁溶液与氢氧化钠溶液
参考答案：
选择题：下列各组物质中，相互不能发生反应的是
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下图是KNO3和NaCl的溶解度曲线。下列说法中正确的是
下图是KNO3和NaCl的溶解度曲线。下列说法中正确的是
Mark and Mary are from different _____ (country).
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I’ll go to the library and look for books and m_____ about Australia.
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Mr Green worked for a long time last night. He ______ (感觉困倦的) today.
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heavier, my, is, yours, bag, than (.)
heavier, my, is, yours, bag, than (.)