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【单选题】
一病人出现进行性吞咽困难,如果该病人食管吞钡X线片示食管中段3cm长之充盈缺损,管腔尚可通过,左锁骨上窝有2cm直径的肿大淋巴结。其治疗选择是( )
A.
手术切除
B.
放射疗法
C.
手术切除十抗癌药物疗法
D.
放疗后再行手术切除
E.
输血补液治疗
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举一反三
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______. ( )
A.
has a great deal of trouble doing mental arithmetic
B.
lacks some of the qualities required of a scientist
C.
just reads about other people's observations and discoveries
D.
comes up with solutions in a most natural way
查看完整题目与答案
【单选题】米酒酪最后放入的培养箱中培养温度是()
A.
30℃
B.
42℃
C.
55℃
D.
65℃
查看完整题目与答案
【判断题】Telework 既可以表示原本在办公室,也可以表达自由职业者在家。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In Hongkong, money supply is a market-determined phenomenon rather than a Monetary Authority regulated one.
A.
正确
B.
错误
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的___________，加入抗生素是为了____________________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入...
查看完整题目与答案
【单选题】Which of the following is a supposition rather than a fact concerning the queen in a naked mole rat colony? ______
A.
She exerts chemical control over the colony.
B.
She is the largest member of the colony.
C.
She mates with more than one male.
D.
She is the only breeding female.
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he______.
A.
just reads about other people's observations and discoveries
B.
comes up with solutions in most natural ways
C.
has a great deal of trouble doing mental arithmetic
D.
lacks some of the qualities required of scientist
查看完整题目与答案
【多选题】细胞系的维持必须注意( )。
A.
做好细胞系的档案记录
B.
遵从细胞生长的规律传代、换液
C.
防止细胞间交叉污染
D.
及时冻存防丢失
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的__________，加入抗生素是为了__________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入早期胚胎的囊胚腔，通过...
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______.
A.
has a great deal of trouble doing mental arithmetic
B.
comes up with solutions in a most natural way
C.
lacks some of the qualities required of a scientist
D.
just reads about other people’s observations and discoveries
查看完整题目与答案
相关题目：
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______. ( )
A.
has a great deal of trouble doing mental arithmetic
B.
lacks some of the qualities required of a scientist
C.
just reads about other people's observations and discoveries
D.
comes up with solutions in a most natural way
查看完整题目与答案
【单选题】米酒酪最后放入的培养箱中培养温度是()
A.
30℃
B.
42℃
C.
55℃
D.
65℃
查看完整题目与答案
【判断题】Telework 既可以表示原本在办公室,也可以表达自由职业者在家。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In Hongkong, money supply is a market-determined phenomenon rather than a Monetary Authority regulated one.
A.
正确
B.
错误
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的___________，加入抗生素是为了____________________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入...
查看完整题目与答案
【单选题】Which of the following is a supposition rather than a fact concerning the queen in a naked mole rat colony? ______
A.
She exerts chemical control over the colony.
B.
She is the largest member of the colony.
C.
She mates with more than one male.
D.
She is the only breeding female.
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he______.
A.
just reads about other people's observations and discoveries
B.
comes up with solutions in most natural ways
C.
has a great deal of trouble doing mental arithmetic
D.
lacks some of the qualities required of scientist
查看完整题目与答案
【多选题】细胞系的维持必须注意( )。
A.
做好细胞系的档案记录
B.
遵从细胞生长的规律传代、换液
C.
防止细胞间交叉污染
D.
及时冻存防丢失
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的__________，加入抗生素是为了__________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入早期胚胎的囊胚腔，通过...
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______.
A.
has a great deal of trouble doing mental arithmetic
B.
comes up with solutions in a most natural way
C.
lacks some of the qualities required of a scientist
D.
just reads about other people’s observations and discoveries
查看完整题目与答案