程度副词 应改为:still more
解释:程度副词still修饰比较级more时,应置于其前,
词汇:crust: 地壳 silicon: 硅
(4)
A goose’s neck is a tiny longer than that of a duck and not so gracefully curved as a swan’s.
考点:程度副词
应改为:little
解释:形容词tiny不能修饰比较级longer, 应改用程度副词a little
词汇:gracefully: 优雅地, swan: 天鹅