题目

下列实验现象描述正确的是() A . 铁丝燃烧时发出耀眼白光 B . 红磷燃烧时产生大量白雾 C . 氢气燃烧时发出黄色火焰 D . 木炭在氧气中燃烧发白光 答案：D 30. Many of the creatures in the movie “Avatar” are not real, but much of __________ happens is attractive.A．whichB．thatC．whatD．Them