题目

Not only _____ polluted, but _____ crowded. A. was the city; were the streets B. the city was; the streets were C. was the city; the streets were D. the city was; were the streets   答案：Cnot only… but also…引导的并列句，前面的分句要倒装，而后面的不倒装。下列对相应现象或事实的解释不正确的是（   ） 选项 现象或事实 解     释 A 金刚石和石墨的性质差异较大 两者的原子排列方式不同 B 酒香不怕巷子深 分子不断的运动 C 坏血病和骨质疏松症 都是因为缺钙 D 用铁、铝制作炊具；用干冰进行人工降雨；用铜制作导线 都是利用物质的物理性质