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【单选题】
在阳光照射强烈的夏天,某交通繁忙的城市部分居民出现了不同程度的眼睛红肿、流泪、咽喉痛、喘息、咳嗽、呼吸困难、头痛、胸闷、心脏功能障碍等症状,你认为出现这些症状可能的原因是A.
某种传染病流行
B.
光化学烟雾事件
C.
CO急性中毒
D.
煤烟型烟雾事件
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举一反三
【单选题】When Jimmy said that he would invite us all to the party, I think that he ___________ polite.
A.
has only been
B.
is only
C.
was only being
D.
was only
【简答题】(听录音,填空,提交作业) It ___1____Jimmy's birthday, and he was five years old. He got quite a lot of ___2____birthday presents from his family, and one of them was a beautiful____3____drum. "____4____ gave him...
【简答题】It was Jimmy's birthday,and he was five years old.He got quite a lot of nice 1 presents from his family,and one of them was a beautiful big 2 . "Who gave him that thing?" Jimmy's father said when he s...
【简答题】闭式硬齿面齿轮传动的主要失效形式是
【简答题】二胡曲《二泉映月》是 最具有代表性的作品。
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