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【多选题】
以下关于会展业与旅游业关系说法不正确的是
A.
会展业是旅游业的发展基础
B.
旅游业是会展业的特殊形态
C.
旅游业的发展推动会展业
D.
会展业的发展推动旅游业
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皮皮学刷刷变学霸
举一反三
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【单选题】人胚发生中质变最大的时期是在
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第1周
B.
第2周
C.
3-8周
D.
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【单选题】“火线桥”架在哪条河流上?
A.
沂河
B.
汶河
C.
沭河
D.
凉河
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【简答题】As we know, it is not easy to build a satellite(卫星). Building a traditional satellite usually takes years. The costs can be as high as $250 million or more. Most members of the design teams have worke...
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【简答题】完形填空。 It's necessary to talk about the most important thing-food.  If we want to be l , we must have enough food. It must be clean food which is well 2 , and it must be the right kind of food. Many pe...
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【单选题】听力原文：W: Do you know anything about Prof. Smith's class? M: If you are looking for an easy course, forget it. Prof. Smith writes the trickiest exams in the department. Q: What do we learn about Prof. S...
A.
He is very forgetful.
B.
He likes to play tricks.
C.
His tests are difficult.
D.
It is easy to pass his course.
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【单选题】下列有关细胞分化的描述，正确的是（）
A.
是一种临时性的变化，在胚胎时期达到最大限度
B.
人的胰岛细胞产生胰岛素，不产生血红蛋白，是因为胰岛细胞中无血红蛋白基因
C.
细胞分化过程中遗传物质发生了改变
D.
是一种持久性的变化，其稳定性变异是不可逆转的
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【单选题】人体各部位长度和胖瘦的关系称为()。
A.
人体的轮廓
B.
人体的比例
C.
人体的结构
D.
人体的形象
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【简答题】Practice 3-2 Read the paragraph below carefully, try to use several appropriate transition devices in proper places to connect sentences smoothly. Daniel and I have several things in common that have ...
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【简答题】Write down the main idea of each part. Parts Paragraphs Main Ideas Part Three Paras. 6 – 9 It is very important to make observations of _________________. However, owing to lack of __________, compare...
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【单选题】人胚发生中质变最大的时期是在
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D.
凉河
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【简答题】As we know, it is not easy to build a satellite(卫星). Building a traditional satellite usually takes years. The costs can be as high as $250 million or more. Most members of the design teams have worke...
查看完整题目与答案
【简答题】完形填空。 It's necessary to talk about the most important thing-food.  If we want to be l , we must have enough food. It must be clean food which is well 2 , and it must be the right kind of food. Many pe...
查看完整题目与答案
【单选题】听力原文：W: Do you know anything about Prof. Smith's class? M: If you are looking for an easy course, forget it. Prof. Smith writes the trickiest exams in the department. Q: What do we learn about Prof. S...
A.
He is very forgetful.
B.
He likes to play tricks.
C.
His tests are difficult.
D.
It is easy to pass his course.
查看完整题目与答案
【单选题】下列有关细胞分化的描述，正确的是（）
A.
是一种临时性的变化，在胚胎时期达到最大限度
B.
人的胰岛细胞产生胰岛素，不产生血红蛋白，是因为胰岛细胞中无血红蛋白基因
C.
细胞分化过程中遗传物质发生了改变
D.
是一种持久性的变化，其稳定性变异是不可逆转的
查看完整题目与答案
【单选题】人体各部位长度和胖瘦的关系称为()。
A.
人体的轮廓
B.
人体的比例
C.
人体的结构
D.
人体的形象
查看完整题目与答案
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查看完整题目与答案