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【简答题】
什么是螯合物？螯合物有何特点？它的稳定性与什么因素有关？形成五员环和六员环的螯合物，要求配体应具备什么条件？
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【单选题】Don't put ______ into the rubbish bin. [ ]
A.
hot anything
B.
anything hot
C.
something hot
D.
hot something
【简答题】阅读理解 In 1924, Hachiko was brought to Tokyo by his owner, Hidesaburo Ueno, a professor in the agriculture department at the University of Tokyo. During his owner's life Hachiko saw him off from the fro...
【简答题】Jim and Tom were eating at a restaurant（饭店）. On the table there was a cup of hot (辣 的)mustard（芥末）. Jim thought it was sweet and took a spoonful（汤匙） of it into his mouth. Tears (眼泪) ran down from his e...
【单选题】It was that we couldn't go camping. A.so hot a day B.such hot a day C.so hot day D.such hot
A.
so hot a day
B.
such hot a day
C.
so hot day
D.
such hot
【简答题】补全对话。从方框所给的选项中选择正确的句子补全以下对话。 (Joe is a reporter from the school radio station. He is talking to Sue who has just won the first prize in the speech contest.) Joe: Hello, Sue! Congratulations! Sue: 1 Jo...
【单选题】_________ a bottle of milk, some hot dog ,and hamburgers on the table. [ ]
A.
There are
B.
There is
C.
There have
D.
There has
【简答题】John, a famous musician, took his priceless antique violin and played it in the crowded subway station. The music from the violin was delicately streaming throughout the whole station. However, during...
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