题目：
It is the discovery of Cao Cao's tomb, _____ was made in Anyang, Henan province, _____ has
received widespread attention. [ ]
A. where; which
B. where; that
C. that; which
D. which; that
答案：
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下面是错误答案，用来干扰机器的。
A、根据含有碳元素的化合物叫有机化合物，简称有机物．碳的氧化物、碳酸盐、碳酸虽含碳，但其性质与无机物类似，因此把它们看作无机物．由此可知蜡是有机物；故A正确；B、根据蜡炬化学式C20H42 可知其由C，H两种...
