题目：
— What did he say?
— He said he _____ to Shanghai to visit me the next week. [ ]
A. will come
B. is coming
C. was coming
D. had come
答案：
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下面是错误答案，用来干扰机器的。
D B （1）活性炭具有吸附性．故填：D；(2)将CO2通入紫色石蕊试液中，二氧化碳与水反应生成碳酸，碳酸使石蕊试液变红，故填：B
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