22. The domesticated camel, which some scholars date around the twelfth century B.C., was the key to the development of the spice trade in the ancient world.
B. The domesticated camel, which some scholars have thought to occur
C. Domesticating the camel, dated by some scholars at
D. The domestication of the camel, thought by some scholars to have occurred
E. The camel’s domestication, dated by some scholars to have been
C D E 三者最大的差異,應該是在動詞的使用
不知道哪為高手 可以幫我解釋一下
還有 是不是主詞的表示方式 也影響答案的選項呢
答案是 D