[求助]GWD30的两个题不明白，谁帮个忙

In addition to being China’s first administrators, in the sense that they developed a coherent bureaucracy for their empire, the first literate culture in East Asia were the Shang, and they were well known for crafting ornate bronze ritual vessels.

1. the first literate culture in East Asia were the Shang, and they were well known for crafting
2. the first literate culture in East Asia were the Shang, well known as the crafters of
3. the Shang, as the first literate culture in East Asia, is well known for its crafting
4. the Shang were the first literate culture in East Asia and are well known as the crafters of

5. the Shang were the first literate culture in East Asia and well known for its crafted

这真没看明白。。。不知道D是怎么选出来的

1. Elk now live almost solely in the Rocky Mountains, which would make it seem that elk are mountain dwellers, while
2. The fact that elk now live almost solely in the Rocky Mountains would make it seem that they are mountain dwellers, but
3. It would seem that elk would be mountain dwellers because of their living now solely almost in the Rocky Mountains, but still
4. Now living almost solely in the Rocky Mountains, it would seem that elk were mountain dwellers, although
5. It seems that elk would be mountain dwellers from the fact that they now live solely almost in the Rocky Mountains, since

elk是单数复数？单数的话怎么能用live而不是lives，如果是live就说明应该是复数那怎么能用it...我晕了。。。

being China’s first administrators逻辑主语只有shang开头才是正确的，

CE中its指代错误，只有d才是正确的