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去甲肾上腺素(INN名称:Norepinephrine,也称Noradrenaline,缩写NE或NA),旧称“正肾上腺素”,学名1-(3,4-二羟苯基)-2-氨基乙醇,是肾上腺素去掉 N-甲基后形成的物质,在化学结构上也属于儿茶酚胺。它既是一种神经,主要由交感节后神经元和脑内肾上腺素能神经末梢合成和分泌,是后者释放的主要,也是一种激素,由肾上腺髓质合成和分泌,但含量较少。循环血液中的去甲肾上腺素主要来自肾上腺髓质。
A.
正确
B.
错误
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【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
War has become more destructive with modern weapons.
B.
War can be spread more widely in many parts of the world.
C.
War can be controlled in its destruction of the environment.
D.
War has been fought more and more for political reasons.
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【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
The money was spent at the cost of educational services.
B.
It could teach children the value of scientific research.
C.
The results would be important to Latin America too.
D.
It meant little to the progress of developing countries.
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【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
it will lead to more cultural conflicts and the spread of diseases
B.
it increasingly relies on advanced technology to attack targets
C.
it can affect the quality of life for many years and generations
D.
it is aimed at not just defeating but also destroying enemies
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【判断题】Today the conflicts between Catholics and Protestants remain the most noticeable divide in the Irish society.
A.
正确
B.
错误
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【简答题】Today, the mission of one institution can be accompanied only by recognizing that it lives in a(n) ______ world with conflicts and overlapping interests. (dependence)
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【判断题】Today the conflicts between Catholics and Protestants remain the most noticeable divide in the Irish society.
A.
正确
B.
错误
查看完整题目与答案
【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
The decrease of population.
B.
The destruction of natural resources.
C.
The nuclear weapon competition.
D.
The sufferings of children.
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【单选题】Cultural conflicts, such as those that trouble American society today, may sometimes appear to be less than serious squabbles between intellectuals who have nothing better to do. It is regrettably tru...
A.
academic discussions on related issues
B.
debates on some big topics
C.
quarrels about a small detail
D.
personal remarks on issues concerned
查看完整题目与答案
【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
Before the 20th century, the major causes of death were injuries and infection from wars.
B.
The number of soldiers who died in wars increased from the 19th to the 20th century.
C.
The percentage of soldiers who died during World War II is 48%.
D.
The targets of war have changed from soldiers only to civilians as well.
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【简答题】新中国第一部社会主义类型的宪法是什么？
查看完整题目与答案
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【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
War has become more destructive with modern weapons.
B.
War can be spread more widely in many parts of the world.
C.
War can be controlled in its destruction of the environment.
D.
War has been fought more and more for political reasons.
查看完整题目与答案
【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
The money was spent at the cost of educational services.
B.
It could teach children the value of scientific research.
C.
The results would be important to Latin America too.
D.
It meant little to the progress of developing countries.
查看完整题目与答案
【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
it will lead to more cultural conflicts and the spread of diseases
B.
it increasingly relies on advanced technology to attack targets
C.
it can affect the quality of life for many years and generations
D.
it is aimed at not just defeating but also destroying enemies
查看完整题目与答案
【判断题】Today the conflicts between Catholics and Protestants remain the most noticeable divide in the Irish society.
A.
正确
B.
错误
查看完整题目与答案
【简答题】Today, the mission of one institution can be accompanied only by recognizing that it lives in a(n) ______ world with conflicts and overlapping interests. (dependence)
查看完整题目与答案
【判断题】Today the conflicts between Catholics and Protestants remain the most noticeable divide in the Irish society.
A.
正确
B.
错误
查看完整题目与答案
【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
The decrease of population.
B.
The destruction of natural resources.
C.
The nuclear weapon competition.
D.
The sufferings of children.
查看完整题目与答案
【单选题】Cultural conflicts, such as those that trouble American society today, may sometimes appear to be less than serious squabbles between intellectuals who have nothing better to do. It is regrettably tru...
A.
academic discussions on related issues
B.
debates on some big topics
C.
quarrels about a small detail
D.
personal remarks on issues concerned
查看完整题目与答案
【单选题】Directions: There are two passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should de...
A.
Before the 20th century, the major causes of death were injuries and infection from wars.
B.
The number of soldiers who died in wars increased from the 19th to the 20th century.
C.
The percentage of soldiers who died during World War II is 48%.
D.
The targets of war have changed from soldiers only to civilians as well.
查看完整题目与答案
【简答题】新中国第一部社会主义类型的宪法是什么？
查看完整题目与答案
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