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【单选题】
高锰酸钾法中终点的判断( )A.
.蓝色出现
B.
蓝色消失
C.
粉红色出现
D.
粉红色消失
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反馈参考答案：
举一反三
【单选题】According to the passage, most people are not so successful because they lack of______.
A.
confidence
B.
the required ability
C.
strong will
D.
enough practice
【简答题】简述操作数的类型及其相应的表示方法。
【单选题】The information in this passage would most likely be found in textbook. 查看材料
A.
an anthropology
B.
a biology
C.
a mathematics
D.
a geography
【单选题】The tone of the passage can most probably be described as
A.
facetious.
B.
serious.
C.
nostalgic.
D.
factual.
【单选题】The passage is most probably taken from ______.
A.
a textbook
B.
a magazine
C.
an operational manual
D.
a book of installation instructions
【简答题】王华每月的工资为20000元,计算每月的应纳税额
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