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【单选题】
在基因表达载体的构建中,下列说法错误的是( ) 1 一个基因表达载体的组成包括目的基因、启动子、终止子 2 有启动子才能驱动基因转录出 mRNA 3 终止子的作用是使转录在相应地方停止 4 所有基因表达载体的构建是完全相同的
A.
②③
B.
①④
C.
①②
D.
③④
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【单选题】以下哪种资料与发改局有关。（ ）
A.
节能减排
B.
水资源
C.
水环境质量
D.
流域防洪
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【单选题】A 30-year-old woman from Barcelona has noted enlargement of her neck over the past 4 months. On physical examination, she has a diffusely enlarged thyroid that is not painful to palpation. Her TSH lev...
A.
Subacute granulomatous thyroiditis
B.
Papillary carcinoma
C.
Multinodular goiter
D.
Hashimoto thyroiditis
E.
Graves disease
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【单选题】Which of the following statements is true?
A.
The volume of deals for hedging purposes is much higher than that for arbitraging and speculative purposes.
B.
The foreign exchange business for commerce and tourism must be done before 11a.m.on 2 January.
C.
It is hedgers' money that drives much larger volume of other transactions.
D.
None of the above.
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【单选题】“Where____myumbrella? ”“Somebody ____ it away by mistake、”
A.
is, must have taken
B.
is, must take
C.
have been, must take
D.
is, takes
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【简答题】A、B、C是三种常见短周期元素的单质．常温下D为无色液体，E是一种常见的温室气体．其转化关系如图（反应条件和部分产物略去）．试回答： （1）E的结构式是______，F的电子式是______ （2）写出F与D反应的离子方程式并标出电子转移的方向和数目______ （3）物质Z与B互为同素异形体，它常用于对空气进行杀菌、净化和水果保鲜等．Z和酸性碘化钾溶液反应生成B和碘单质，反应的离子方程式是___...
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【单选题】The example of an electric shock to a child in Paragraph 5 is given to show
A.
success is much more informative than failure.
B.
failure is instructive if it is impressive.
C.
failure confuses the storing process of the brain.
D.
failure is stored only when it brings obvious negative outcomes.
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【多选题】What need be taken into consideration to determine whether a meeting is necessary?
A.
Must the job get done via presenting, discussing and decision making, etc.?
B.
What time is it possible to set out to work?
C.
Is there an alternative way to deal with the mission?
D.
What objective and outcome need to be reached?
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【单选题】______________ twice a year, whether it is a car, a bus or a truck, is the rule that every driver must obey in this city.
A.
Examining
B.
Examined
C.
Having been examined
D.
Being examined
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【单选题】Which of the following adverbs in italic is NOT used to modify adjective?
A.
This cake is much better than that one.
B.
The soup is a bit too salty for me.
C.
Mary is old enough to get married.
D.
The bus is too crowded to get on.
查看完整题目与答案
【单选题】以下哪种资料与发改局有关。( )
A.
水环境质量
B.
水资源
C.
节能减排
D.
流域防洪
查看完整题目与答案
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【单选题】以下哪种资料与发改局有关。（ ）
A.
节能减排
B.
水资源
C.
水环境质量
D.
流域防洪
查看完整题目与答案
【单选题】A 30-year-old woman from Barcelona has noted enlargement of her neck over the past 4 months. On physical examination, she has a diffusely enlarged thyroid that is not painful to palpation. Her TSH lev...
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B.
Papillary carcinoma
C.
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D.
Hashimoto thyroiditis
E.
Graves disease
查看完整题目与答案
【单选题】Which of the following statements is true?
A.
The volume of deals for hedging purposes is much higher than that for arbitraging and speculative purposes.
B.
The foreign exchange business for commerce and tourism must be done before 11a.m.on 2 January.
C.
It is hedgers' money that drives much larger volume of other transactions.
D.
None of the above.
查看完整题目与答案
【单选题】“Where____myumbrella? ”“Somebody ____ it away by mistake、”
A.
is, must have taken
B.
is, must take
C.
have been, must take
D.
is, takes
查看完整题目与答案
【简答题】A、B、C是三种常见短周期元素的单质．常温下D为无色液体，E是一种常见的温室气体．其转化关系如图（反应条件和部分产物略去）．试回答： （1）E的结构式是______，F的电子式是______ （2）写出F与D反应的离子方程式并标出电子转移的方向和数目______ （3）物质Z与B互为同素异形体，它常用于对空气进行杀菌、净化和水果保鲜等．Z和酸性碘化钾溶液反应生成B和碘单质，反应的离子方程式是___...
查看完整题目与答案
【单选题】The example of an electric shock to a child in Paragraph 5 is given to show
A.
success is much more informative than failure.
B.
failure is instructive if it is impressive.
C.
failure confuses the storing process of the brain.
D.
failure is stored only when it brings obvious negative outcomes.
查看完整题目与答案
【多选题】What need be taken into consideration to determine whether a meeting is necessary?
A.
Must the job get done via presenting, discussing and decision making, etc.?
B.
What time is it possible to set out to work?
C.
Is there an alternative way to deal with the mission?
D.
What objective and outcome need to be reached?
查看完整题目与答案
【单选题】______________ twice a year, whether it is a car, a bus or a truck, is the rule that every driver must obey in this city.
A.
Examining
B.
Examined
C.
Having been examined
D.
Being examined
查看完整题目与答案
【单选题】Which of the following adverbs in italic is NOT used to modify adjective?
A.
This cake is much better than that one.
B.
The soup is a bit too salty for me.
C.
Mary is old enough to get married.
D.
The bus is too crowded to get on.
查看完整题目与答案
【单选题】以下哪种资料与发改局有关。( )
A.
水环境质量
B.
水资源
C.
节能减排
D.
流域防洪
查看完整题目与答案