13. Textile production has a serious environmental impact, it consumes a significant amount of all the water used worldwide.

　　(A) it consumes

　　(B) its consumption is

　　(C) this consumes

　　(D) consuming

　　(E) it has consumed

　　答案：D

　　类型：句子结构

　　解析：原句是run-on句子，A错。B与A错误类型一致，B错。C有两个错误，一个是this直接用来做主语，第二，C选项也是run-on句型。D中consuming...做状语，D正确。E仍然是run-on句型。

　　14. Given that goats and sheep were domesticated earlier than cattle, it is thought that the production of cheeses made from goat’s and sheep’s milk predate that of cheese made from cow’s milk.

　　(A) predate that of

　　(B) predates that of

　　(C) predated those of

　　(D) have predated

　　(E) predate

　　答案：B

　　类型：比较

　　解析：句子是拿production of cheeses made from goat’s and sheep’s milk和production of cheese made from cow’s milk来进行比较，production可以用that指代。另外，production是三人称单数，因此必须用三人称单数谓语动词。因此答案只能选B。