题目

hat a table ! I’ve never seen such a thing before .It is _____ it is long.  A. half not as wide as    B. wide not as half as    C. not half as wide as    D. as wide as not half   答案：C对物质燃烧的现象，描述正确的是（　　）A.碳在氧气中燃烧发出白光B.氢气在空气中燃烧发出蓝光C.磷在空气中燃烧产生白色烟雾D.硫在氧气中燃烧发出淡蓝色火焰