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【单选题】
手机中至少含有多少种化学元素?A.
46
B.
57
C.
60
D.
70
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反馈参考答案：
举一反三
【简答题】根据课文内容完成下面短文(注意括号中的提示)。 At the end of the 16th century, English was only spoken by people in England. They were native English speakers. However, 1______ English language has changed quite a lot over ...
【判断题】Marguerite was a sensitive girl and was upset by Momma’s behavior towards Mrs. Flowers.
A.
正确
B.
错误
【单选题】It is not enough only________ the rules of grammar if you want to learn English well.
A.
keeping in the mind
B.
to keep in mind
C.
to keep in your mind
D.
keeping in your mind
【单选题】According to this passage, _________.
A.
English is a sexist language
B.
only in the scientific world is the role of women increasing rapidly
C.
women are making significant contributions to eliminating the inadequacy of our language
D.
male nouns or pronouns should not be used to refer to scientists
【简答题】有A、B、C 三种短周期元素在周期表中相对位置如下图 (1)A与C形成的液态化合物是常见的重要有机溶剂，则A、B、C三种元素最高价氧化物对应的水化物酸性由强到弱的顺序是：____>____>____（用化学式表示）。 (2)X、Y为B、C两种元素形成的单质。标准状况下，X的密度为3. 17 g/L。Z是一种化合物，焰色反应呈紫色（透过钴玻璃），室温下0.1 mol/L Z水溶液pH=13。X、Y、...
【简答题】__1__ the end of the 16 th century English was only spoken by people from England. They were the native _2___(speak). Today, __3__ largest number of people speaking English may be in China because a l...
【单选题】企业一定期间的利润总额是指( )。
A.
营业利润加投资收益
B.
营业利润加营业外收支净额
C.
营业利润加公允价值变动净损益
D.
营业利润加营业外收支净额减所得税费用
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