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关于巴比妥类药物鉴别中的铜盐反应,以下叙述正确的是
A.
含硫巴比妥类药物显紫色或生成紫色沉淀
B.
含硫巴比妥类药物显绿色
C.
一般巴比妥类药物显紫色或生成紫色沉淀
D.
一般巴比妥类药物显绿色
E.
凡是巴比妥类药物均显紫色或紫色沉淀
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【单选题】China should get a good mark for its performance on commitments it made to the World Trade Organization (WTO), said the Chinese ( ). 我国这位大使说中国在落实对世贸组织的承诺方面的表现上应该得高分。
A.
ambassador
B.
embassy
C.
assembly
D.
embarrassed
【简答题】从文章选材的角度看,第4段中画线部分似乎有损于“父亲”的完美,作者为什么还要写这些内容?谈谈你的理解。
【单选题】To mark its one hundredth anniversary, the university held a series of activities including conferences, film shows, etc. The underlined part means
A.
signify.
B.
celebrate.
C.
symbolize.
D.
suggest.
【单选题】In the summer program, the students' attendance rate was ______.
A.
ninety percent
B.
one hundred percent
C.
ninety-five percent
D.
eighty percent
【单选题】There are many kinds of metals ______.
A.
each has its special properties
B.
one has its special properties
C.
each having its special properties
D.
having its special properties
【简答题】The National Park Service in the United States will mark its one hundredth anniversary in 2016. As it nears its second century, the Park Service plans to increase its educational programs for students...
【单选题】A MARK OR POSITION AT WHICH A VESSEL IS REQUIRED TO REPORT TO ESTABLISH ITS POSITION defines ______.
A.
VTS point
B.
Way point
C.
Reference point
D.
Establishment
【单选题】'We will learn English words this year,' the teacher said to the students.
A.
one thousand, three hundred and twenty-one
B.
a thousand, and three hundred twenty-one
C.
one thousand, three hundred twenty-one
D.
a thousand, three hundred and twenty-one
【单选题】In the summer program, the students' attendance rate was ______.
A.
ninety percent
B.
One hundred percent
C.
ninety-five percent
D.
eighty percent
【简答题】从文章选材的角度看,第4段中画线部分似乎有损于“父亲”的完美,作者为什么还要写这些内容?谈谈你的理解。 答:_____________________________ .
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