题目

阅读理解 In areas like the Central United States that get lots oftornadoes, there's a common piece of celestial （天上的）fortune-telling that green skies mean atornado is on its way. Research has shown that it isn't quite assimple as that, but scientists have found that if you see a green sky, youshould probably go inside. As far as most scientists can tell, the green skiesaround powerful thunderstorms are usually a combination of red sunsets andwater droplets. Daytime skies are blue because blue shorter wavelengths ofvisible light tend to bounce off （反射）air molecules better 8410÷7，商的末尾一定有一个0． ．（判断对错）