SC知識點：（語意合理性）簡單動名詞（Ving）v.s. 複雜動名詞（the Ving）與動作性名詞（action noun）
Thirteen states from all regions of the country announced a plan to impose new controls on pollution from truck and bus engines in that they will jointly adopt emission limits that would be far stricter than the federal rules.
(B) to impose new controls on truck and bus engines’ pollution by the joint adoption of
(C) to impose new controls on pollution from truck and bus engines by jointly adopting
也就是如何分辨語意上該用Ving，還是用the Ving / action noun。
表事實事件動名詞（the/N’s Ving）/動作性名詞（action noun）：
Imitating those who speak English fluently will help your communication skill.
His imitation to the famous actor John Smith was excellent.
Excessively Surfing on Internet wasted a lot of time for modern people.
The slow surfing on Internet yesterday was a disaster.
Leaching, the recovery of copper from the drainage water of mines, was a well-established method of mineral extraction as early as the eighteenth century, but until about 25 years ago miners did not realize that bacteria take an active part in the process.
(C) was a well-established method of mineral extraction
(D) was a well-established method of extracting mineral that was
Building on civilizations that preceded them in coastal Peru, the Mochica developed their own elaborate society, based on cultivating such crops as corn and beans, harvesting fish and seafood, and exploiting other wild and domestic resources.
(A) based on cultivating such crops like corn and beans, harvesting fish and seafood, and exploiting
(B) based on the cultivation of such crops as corn and beans, the harvesting of fish and seafood, and the exploitation of
關於第二題，由於語意在討論的是Mochica民族是如何建構他們的社會，所以是真實發生的特定事件，使用表事實事件的動作性名詞cultivation / exploitation 或 複雜動名詞 the harvesting。
That twenty-one ceramic dog figurines were discovered during the excavating of a 1,000-year-old Hohokam village in Tempe, Arizona, has nearly doubled the number of these artifacts known to exist.
(C) Discovering twenty-one ceramic dog figurines at the excavating
(E) The discovery of twenty-one ceramic dog figurines during the excavation