China is the world's most populous country with a population of 1.1 billion, which makes up（ ）a quarter of the world population.
A.precisely B.merely C.substantially D.approximately正确答案D
China is the world's most populous country with a population of 1.1 billion, which makes up（ ）a quarter of the world population.
A.precisely B.merely C.substantially D.approximately正确答案D
