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【单选题】
大肠杆菌中，有些功能相关的RNA基因串联在一起，如构成核糖核蛋白体的3种RNA基因转录在同一个转录产物中，它们依次是16S rRNA、23S rRNA、5S rRNA。这3种RNA在核糖体中的比例是（）。A.
1：1：1
B.
1：2：1
C.
2：1：2
D.
1：2：3
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皮皮学刷刷变学霸
举一反三
【多选题】科学发展观强调,建设生态文明,实质上就是要建设( )的资源节约型、环境友好型社会。
A.
以资源环境承载力为基础
B.
以自然规律为准则
C.
以可持续发展为目标
D.
安定有序
E.
人与自然和谐相处
【单选题】How many people were killed in the fire?
A.
More than 220 people.
B.
About 50 people.
C.
More than 300 people.
【单选题】How many people were injured or killed in the blasts?
A.
Nobody were killed, four injured.
B.
Two were killed, five injured.
C.
Two were killed, seven injured.
D.
Nobody were killed, seven injured.
【单选题】How many people were killed and how many were injured in the earthquake?
A.
33, 100.
B.
55, 500.
C.
66, 1000.
D.
77, 1500.
【多选题】科学发展观强调,建设生态文明,实质上就是要建设( )的资源节约型、环境友好型社会。
A.
以资源环境承载力为基础
B.
以自然规律为准则
C.
以可持续发展为目标
D.
安定有序
【简答题】How many people were given tasimelteon in the experiment?
【单选题】How many people were killed in the fire?
A.
More than 220 people.
B.
About 50 people.
C.
More than 300 peopl
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