OG详解-OG5 文法 Q27

Choice A is the best answer. The sentence specifies when al-Biruni published his landmass theory, indicating that it was published in the year 1037 CE.
Choice B is incorrect. While the sentence notes that al-Biruni published a landmass theory, it doesn’t specify when the theory was published. Choice C is incorrect. The sentence identifies al-Biruni as a scholar of Earth’s physical features; it doesn’t specify when he published his landmass theory. Choice D is incorrect. The sentence describes al-Biruni’s landmass theory; it doesn’t specify when the theory was published.