一道简单的高中英语语法题

题目

一道简单的高中英语语法题
China became the third country in the world( )is able to carry out a spacewalk.
A what
B that
C who
D whichThe South-to-North water Diversion Project is the biggest one 【 】has been built in China so far.
Awhich
Bwhere
Cthat
Dwhat答案是B,请解释句子结构并翻译,还有D项为什么不对,越详细清楚越好哦,

答案

第一题是B,第二题是CChina became the third country in the world ( )is able to 中国 成为了 第三个国家 在世界上 有能力carry out a spacewalk.进行太空行走的国家.第一题定语从句,先行词为 the third country,引...