【单选题】

The passage is primarily concerned with ______.
A．(A) analyzing the extraterrestrial materials.

B．(B) informing readers of the debate on life on Mars.
C．(C) describing surface of Mars.
D．(D) reporting the NASA conference on the meteorite ALH84001.

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根据网考网移动考试中心的统计，该试题：

2%的考友选择了A选项

83%的考友选择了B选项

4%的考友选择了C选项

11%的考友选择了D选项

The passage is primarily concerned with ______.A．(A) analyzing the extraterrestrial materials.

The passage is primarily concerned with ______.
A．(A) analyzing the extraterrestrial materials.