These windshields are formed to the exact shape required, but are slightly larger than necessary so they may be trimmed to the exact size,这些挡风玻璃形成了精确的形状，但比必要的略大，所以他们可以修剪 到精确的大小。
A.The windshields are filled in a form that requires an exact shape, but they are necessary to have a slightly larger space for the ease of adjustment. B.The shape of the windshields has exact requirements, but for purpose of exact size, they appear slightly larger C.These windshields are shaped to a required exact appearance, but in order to be clipped accurately, they are a little bigger than necessary,正确答案C
