和反应(2)具有相同的指前因子，即A1=A2。测得在同一温度下升高20K时，反应(1)和反应(2)的速率常数分别提高了2倍和3倍，这说明反应(1)的活化能Ea，1( )反应(2)的Ea，2，而且，在同一温度下，反应(1)的速率常数k1( )反应(2)的k2。
A．(
B．(D)可能大于也
参考答案：C,A
解析：由阿伦尼乌斯指数方程k=Ae-Ea(RT)可知，k与Ea呈指数关系成反比，即Ea越小，k的数值越大，活化能Ea数值越大，k的增大幅度越大，故Ea,1于Ea,2反之，反应(1)的k1。大于反应(2)的k2。
| 阅读理解。 阅读下面短文，把A-D四个句子填入文中空缺处，使短文内容完整、正确，然后完成第1-5小题。 | |
| Once, a gentleman was traveling on a bus. He felt thirsty and got off at a station in search of water. However, before he got back to the bus, it left and he missed it. 1 He went to the nearby hotels to ask for a room but found none. At last he reached a hut (小屋). He asked the owner of the hut whether he could stay in his house for a day. The owner agreed. On that day the owner served him food and gave him a room to stay in, but did not ask for or expect anything in return. 2 The owner opened the door. A well-dressed man entered and asked the owner to pay his debts (债务). The gentleman came to know that the owner was in need of money. 3 When the owner saw the money, he found that there was also a note. It read," 4 Yesterday I heard the conversation between you and the stranger and came to know that you were in need of money. This is what you need." | |
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| 5. What does the passage mainly tell us? | |
| A. When you find others in need of money, give them some. B. When you help others, you are helped too. C. When you travel on a bus, don't get off before you reach the end. D. When you get help from others give them money in return. |