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【单选题】
下列说法或表示方法中正确的是（ ）A.
等质量的硫蒸气和硫固体分别完全燃烧，后者放出的热量多
B.
由C（金刚石）→C（石墨）ΔH= -1．9KJ/mol 可知，金刚石比石墨稳定
C.
由2H 2 (g)＋O 2 (g)＝2H 2 O(l) ΔH＝－571．6 kJ·mol －1 可知，H 2 的燃烧热为-571．6 kJ·mol －1
D.
稀溶液中：H + （aq）+OH — （aq）=H 2 O(l) ΔH= —53．7KJ/mol ，若将含0．5 molH 2 SO 4 的浓溶液与含1 molNaOH的溶液混合，放出的热量大于57．3KJ
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【单选题】Why did nobody care about the Turkish astronomer's discovery at first?
A.
Because his discovery was not true.
B.
Because he ws in Turkish costume.
C.
Because he was dressed with impressive style and elegance.
【单选题】Why did nobody care about the Turkish astronomer’s discovery at first?
A.
Because his discovery was not true.
B.
Because he was in Turkish costume.
C.
Because he was dressed with impressive style and elegance.
【简答题】地球绕地轴不停的旋转，叫做地球的 ，方向是 ；同时，地球也围绕太阳进行 ，方向是 ，周期是 。
【简答题】填下列表格． 地球的自转 地球的公转 围绕中心 方向 周期 地理现象
【单选题】根据下列文章,请回答 21～25 题。 Text 1 Mistakes are the things that nobody wants, but we still make mistakes at any age. Some mistakes we make are about money. Some are about work or jobs. But most mistakes are a...
A.
how to interpret what people say
B.
what to do when you listen to others talking
C.
how to avoid mistakes when you communicate with people
D.
why we go wrong with people sometimes
【单选题】如下图所示,月球围绕地球转,地球围绕太阳转,应如何设置父子关系?
A.
月球的父层是地球，地球的父层是太阳
B.
球的子层是地球，地球的子层是太阳
C.
月球和地球的父层都是太阳
D.
月球和地球的子层都是太阳
【单选题】Why did nobody care about the Turkish astronomer’s discovery at first?( )
A.
Because his discovery was not true.
B.
Because he was in Turkish attire.
C.
Because he was dressed with impressive style and elegance.
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