题目内容

红土型矿床是一种沉积矿床。()

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According to the text, supersizing is popular among consumers because______.

A. they enjoy eating more
B. there is less packaging
C. it allows the fast food restaurant to make more profits
D. the added amount seems like a bargain

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红土型矿床是一种沉积矿床。()

According to the text, supersizing is popular among consumers because______.

沉积赤铁矿矿床的含矿层以粗碎屑岩为特征。()

早期岩浆矿床矿体的产状必与岩浆岩的岩相带相一致。()

干酪根是可存在于沉积岩中可溶于有机溶剂的有机质。()