733. The distribution of mass within the core of the Earth, like the mantle that surrounds the core, has been deduced from the orbital behavior of the Earth and the motions of satellites controlled by the gravity of the Earth. (A) the mantle that surrounds the core (B) that within the mantle surrounding the core (C) that of the mantle surrounding the core (D) the mantle the core surrounds (E) the distribution of mass within the mantle that surrounds the core

我看过以前的解释说：within... , like within... the distribution of mass within the core of the Earth the distribution of mass within the mantle surrounding the core 这不难理解

但如果按c来说，也说得同阿？ C . the distribution of mass within the core of the Earth the distribution of the mantle sourrounding the core

我认为是Ｃ的对应关系有问题： The distribution of mass within the core of the Earth that of the mantle surrounding the core 句中the distribution和that对应，mass和the mantle对应，显然mass\mantle的对应是不成立的，地幔应该和地球核心对应。