关于太阳大气层的叙述，正确的是
A． * * 层厚度最厚
B．可见光来源于太阳大气层的最外层
C．我们平时用肉眼观察到的太阳表面是光球层
D．黑子出现在 * * 层，耀斑出现在光球层上
答案：C
本题考查太阳活动的标志。太阳大气由里往外分为光球层， * * 层，日冕层。光球层上的太阳活动类型为黑子， * * 层上的太阳活动类型为耀斑，日冕层上的太阳活动类型为太阳风。我们平时用肉眼观察到的太阳表面是光球层。所以本题选择C选项。
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