【单选题】

The article was written to explain______.
A．the greenhouse effect

B．the greenhouse effect
C．the solar effects on the earth
D．the causes affecting weather

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根据网考网移动考试中心的统计，该试题：

6%的考友选择了A选项

10%的考友选择了B选项

2%的考友选择了C选项

82%的考友选择了D选项

The article was written to explain______.A．the greenhouse effect