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【简答题】
A thief entered the bedroom of the 30 th President of the United States, who met him and helped him escape punishment. The event happened in the early morning hours on one of the first days when Calvin Coolidge came into power, late in August,1923. He and his family were living in the same third-floor suite (套房) at the Willard Hotel in Washington that they had moved in several years before. The former President’s wife was still living in the White House. Coolidge woke up to see a stranger go through his clothes, remove a wallet and a watch chain. Coolidge spoke, “I wish you wouldn’t take that.” The thief, gaining his voice, said, “Why?” “I don’t mean the watch and chain, only the charm (表坠). Take it near the window and read the words on its back, ” the president said. The thief read, “Presented to Calvin Coolidge.” “Are you President Coolidge?” he asked. The president answered, “ Yes, and the House of Representatives(众议院)gave me the watch charm. I’m fond of it. It would do you no good. You want money. Let’s talk this over.” Holding up the wallet, the young man said in a low voice, “I’ll take this and leave everything else.” Coolidge, knowing there was 80 dollars in it, asked the young man to sit down and talk. He told the President he and his college roommate had overspent during their holiday and did not have enough money to pay their hotel bill. Coolidge added up the roommate two rail tickets back to the college. Then he counted out 32 dollars and said it was a loan (借款). He then told the young man, “There is a guard in the corridor(走廊).” The young man nodded and left through the same window as he had entered. 小题1:What caused the thief to meet the President? A.He knew the president had lots of money. B.He knew the president lived in the suite. C.He wanted to be a rich businessman. D.He wanted to steal some money. 小题2:Why did Calvin Coolidge live at the Willard Hotel in those days? A.Because the former president was still in the White House. B.Because the former First Lady hadn’t left the White House. C.Because the hotel was suitable for the First Family to live. D.Because the First lady liked to live there. 小题3:Coolidge counted out 32 dollars______. A.in order to be out of danger B.to make more money from the loan C.in order not to be killed by the thief D.so that the student could overcome his difficulty 小题4:The young man’s roommate went back to college _____. A.by bus B.by water C.by train D.by air 小题5:Which of the following might happen afterwards? A.The thief was put into prison. B.The young man repaid the 32 dollars. C.The President told many reporters the thief’s name. D.The President ordered the young man to repay the money.
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【判断题】若A→2B的活化能为Ea,而2B→A的活化能Ea'。加催化剂后Ea和Ea'同等程度降低;提高反应温度,Ea和Ea'值基本不变;改变起始浓度后,Ea增加。
A.
正确
B.
错误
【简答题】若A→2B的活化能Ea,而2B→A的活化能为Ea'。加入催化剂后Ea和Ea'的变化程度是否相同?( );加不同的催化剂Ea的数值变化( );提高反应温度后Ea和Ea'值( );改变反应起始浓度后,Ea是否改变?( )。
【简答题】若基元反应 A → 2 B 的活化能为 Ea ,而 2 B → A 的活化能为 Ea ’。 问:(1) 加入催化剂后 , Ea 和 Ea ’各有何变化 ? (2) 加入不同的催化剂对 Ea 的影响是否相同 ? (3) 提高反应温度 , Ea 和 Ea ’各有何变化 ? (4) 改变起始温度 , Ea 有何变化 ?
【简答题】若A → 2B的活化能为Ea,而 2B → A的活化能Ea'。加催化剂后Ea和Ea'( );加不同的催化剂则Ea的数值变化( );提高反应温度,Ea和Ea'值( );改变起始浓度后,Ea( )。
【单选题】负角:一条射线绕着端点,按________方向旋转形成的角。
A.
顺时针
B.
逆时针
【单选题】よくスポーツ( )に通います。
A.
セーター
B.
センター
C.
クラス
D.
グラス
【单选题】よくスポーツ( )に通います。
A.
セーター
B.
センター
C.
クラス
D.
グラス
【单选题】27.在菜单中,选项后面带有标记“▶”的项目表示( )
A.
含有对话框
B.
含有子菜单
C.
单选选中
D.
含有列表框
【单选题】正角:一条射线绕着端点,按________方向旋转形成的角。
A.
顺时针
B.
逆时针
【简答题】若基元反应A→2B的活化能为Ea,而2B→A的活化能为Ea。问: (1)加催化剂后,Ea和Ea各有何变化?△H有何变化? (2)加不同的催化剂对Ea的影响是否相同? (3)提高反应温度,Ea和Ea各有何变化? (4)改变起始浓度后,Ea有何变化?
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