Dolphins lack vocal cords, nevertheless creating sounds: a complicated system of whistles, Squeaks, moans, trills, and clicks are produced by sphincter muscles inside the blowhole.
Dolphins lack vocal cords, nevertheless creating sounds: a complicated system of whistles, Squeaks, moans, trills, and clicks are produced by sphincter muscles inside the blowhole. A.nevertheless creating sounds: a complicated system of whistles, squeaks, moans, trills, and clicks are produced by B.nevertheless creating sounds: they produce a complicated system of whistles, squeaks, moans, trills, and clicks with C.but they do create sounds, producing a complicated system of whistles, squeaks, moans, trills, and clicks with D.but they do create sounds, a complicated system of whistles, squeaks, moans, trills, and clicks being produced E.but nevertheless creating sounds: a complicated system of whistles, squeaks, moans, trills, and clicks produced by 这道题给的答案是C,但是我有点儿疑问,后面的介词应该不是用with的吧?nevertheless做副词修饰creating sounds,creating sounds作为lack vocal cords的伴随,另外有人说后面produced前面应该用is不应该用are,但是我觉得这里的A of B形式和平时用的有些区别,这里的A的是量词,是后面的这些声音被produced了,而不是system被produced了,所以应该用are,最主要A里面用的介词是by,所以我觉得正确,大家来讨论下吧