People see the outside world through it. Teachers use this black thing to write things on.

admin2009-08-17  33

问题 People see the outside world through it.
Teachers use this black thing to write things on.

选项

答案G

解析 老师把字写在这种黑色的东西上,这种东西应该是黑板(blackboard),所以选择C。
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