-- How are you feeling here?
-- It's quite hot. I don't know to go or stay.
A:how
B:when
C:whether
D:what
看拼音写句子
sūn zhōnɡ shān xué xí hěn rèn zhēn
xué xí shí yào duō sī duō wèn
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对下面年代尺中提供的时间,解读最准确的是 ( )
地壳中含量最高的金属元素是