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【单选题】
某学生做实验后，采用下列方法清洗所有仪器：①用稀HNO 3 清洗做过银镜反应的试管②用酒精清洗做过碘升华的烧杯③用盐酸清洗长期盛放FeCl 3 溶液的试剂瓶④用盐酸溶液清洗盛过苯酚的试管．你认为他的操作（　　）
A.
②不对
B.
③不对
C.
④不对
D.
全部正确
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【简答题】It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries. Then one day, some visitors from the city arrived...
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【单选题】He once remarked that 'All happy families ________ one another, but each unhappy family is unhappy in its own way'.
A.
like
B.
appear
C.
resemble
D.
represent
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【单选题】He once observed that “All happy families ________ one another, but each unhappy family is unhappy in its own way”．(2012·桂林十八校联考)
A.
like
B.
appear
C.
resemble
D.
represent
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【简答题】IV . Translatethe following sentences into Chinese: We are in urgent need of the goods to meet our immediate requirements and shall be pleased to have your lowest price CIF Jilong for 5,000 do...
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【单选题】We believe that you will find this air conditioning system practical, efficient, and ______ for the need of your company.
A.
cheap
B.
costly
C.
economic
D.
economical
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【判断题】优化的核心是化学因素和工程因素的最优结合，其中化学因素包括：反应器型式、操作方式和操作条件。
A.
正确
B.
错误
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【单选题】We believe that you will pay our draft _________.
A.
on presentation
B.
on purpose
C.
on representation
D.
on demonstration
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【单选题】His unhappy childhood ______ his bad temper.
A.
counts for
B.
accounts for
C.
makes for
D.
goes for
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【单选题】Robert Jeanne believes that ______.
A.
the wasps colonies are the ideal social colonies
B.
wasps have very strict hierarchical classes
C.
wasps' behaviors depend on their, demands
D.
builder wasps have a higher status than pulp forager wasps
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【简答题】It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries. Then one day. Some visitors from the city arrived...
查看完整题目与答案
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【简答题】It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries. Then one day, some visitors from the city arrived...
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【单选题】He once remarked that 'All happy families ________ one another, but each unhappy family is unhappy in its own way'.
A.
like
B.
appear
C.
resemble
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represent
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【单选题】He once observed that “All happy families ________ one another, but each unhappy family is unhappy in its own way”．(2012·桂林十八校联考)
A.
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appear
C.
resemble
D.
represent
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【简答题】IV . Translatethe following sentences into Chinese: We are in urgent need of the goods to meet our immediate requirements and shall be pleased to have your lowest price CIF Jilong for 5,000 do...
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【单选题】We believe that you will find this air conditioning system practical, efficient, and ______ for the need of your company.
A.
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B.
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【判断题】优化的核心是化学因素和工程因素的最优结合，其中化学因素包括：反应器型式、操作方式和操作条件。
A.
正确
B.
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【单选题】We believe that you will pay our draft _________.
A.
on presentation
B.
on purpose
C.
on representation
D.
on demonstration
查看完整题目与答案
【单选题】His unhappy childhood ______ his bad temper.
A.
counts for
B.
accounts for
C.
makes for
D.
goes for
查看完整题目与答案
【单选题】Robert Jeanne believes that ______.
A.
the wasps colonies are the ideal social colonies
B.
wasps have very strict hierarchical classes
C.
wasps' behaviors depend on their, demands
D.
builder wasps have a higher status than pulp forager wasps
查看完整题目与答案
【简答题】It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries. Then one day. Some visitors from the city arrived...
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