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When Albert Einstein was young, he was a quiet child who spent much of his time alone. He was slow to talk and had difficulty in learning to read. When Albert was five years old, his father gave him a compass. Albert was filled with wonder when he discovered that the compass needle always pointed in the same direction ---- the north. He asked his father and his uncle what caused the needle to move. Their answers were difficult for Albert to understand. Yet he spent a lot of time thinking about them. He said later that he felt something must be hidden behind things. Albert didn’t like school. The German schools of that time were not pleasant. Students couldn’t ask questions. Albert said he felt as if he were in prison.. One day Albert told his uncle Jacob how much he hated school, especially mathematics. His uncle told him to solve mathematical problems by pretending to be a policeman. “You are looking for someone,” he said, “but you don’t know who he is. Call him X. Find him by using your mathematical tools.” Albert learned to love mathematics. He was studying the complex mathematics of calculus while all his friends were still studying simple mathematics. Instead of playing with his friends he thought about things such as “What would happen if people could travel at the speed of his light?” Albert wanted to teach mathematics and physics. He graduated with honors, but it was a pity that he could not get a teaching job. 小题1:According to Paragraph 2, we can learn that Albert Einstein ________. A.was interested in the compass B.wanted to be a great scientist C.was not clever enough D.didn’t like thinking by himself 小题2:Why did Albert Einstein hate school? A.He couldn’t play with his friends there B.Students were not allowed to ask questions. C.The schools were like prisons at that time D.He had to learn mathematics that he didn’t like. 小题3:What does the underlined word ‘complex’ probably mean? A.Useful B.Difficult C.Boring D.Interesting 小题4:We can learn from the passage that ________. A.Einstein became a mathematics teacher after graduation B.Einstein gradually loved mathematics with his uncle’s help. C.Einstein’s uncle was a policeman. D.Einstein liked playing with other children.
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A.
正确
B.
错误
【单选题】T细胞活化的第二信号是指
A.
CD4与 MHC - Ⅱ类分子间的相互作用
B.
CD8与 MHC - I 类分子间的相互作用
C.
协同刺激分子与相 应受体间的相互作用
D.
CD8与 MHC - Ⅱ类分子间的相互作用
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A.
正确
B.
错误
【单选题】T 细胞活化的第二信号是指
A.
CD4 与 MHC- Ⅱ 分子间的互相作用
B.
CD8 与 MHC- Ⅰ 分子间的互相作用
C.
TCR-CD3 复合物与抗原肽 -MHC 复合物间相互作用
D.
IL-2 与相应受体间的相互作用
E.
协同刺激分子与相应受体间的相互作用
【单选题】下列不属于断路器技术参数的是( ) ①极限电流 ②额定开断电流 ③关合电流 ④动稳定电流
A.
①③④
B.
②③④
C.
①②④
D.
①②③④
【单选题】T细胞活化的第二信号是指
A.
CD4与MHC-II类分子间的相互作用
B.
CD8与MHC-I类分子间的相互作用
C.
IL-1与相应受体间的相互作用
D.
IL-2与相应受体间的相互作用
E.
协同刺激分子与相应受体间的相互作用
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【单选题】T 细胞活化的第二信号是指
A.
CD4 与 MHC II 类分子间的相互作用
B.
CD8 与 MHC I 类分子间的相互作用
C.
IL-l 与相应受体间的相互作用
D.
抗原 肽 与 MHC II 类分子结合成复合物
E.
协同刺激分子与相应受体间的相互作用
【判断题】生命体是一种一元现象,从生到死,按照自然规律发生发展。( )
A.
正确
B.
错误
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