I take the train into work every morning from a train station near my house. I can get to the station quite
31 because there’s a
short cut(捷径) to the station. But in the summer, it can get quite smelly because of all the
32 . So I always try to
33 through it. Today I was trying to do so as usual when something made me stop for a moment. I saw the most beautiful
34 by an old woman walking in front of me with the help of a white stick.
She was short and
35 and had white hair. She was walking
36 as each step took some effort. I hadn’t specially noticed her at first, until she stopped near a rubbish bin.
She slowly placed her walking stick
37 the rubbish bin. Then she
leaned(倾斜) on it with her right hand. She bent down and reached for the rubbish. She clearly found it difficult and it took her a while. She
38 some rubbish with her left hand and slowly straightened herself up again. All the while she used the rubbish bin to
39 herself. She threw the rubbish inside the bin and then
40 walking. It all took her great effort.
There’s so much rubbish and no one ever does
41 about it. I was moved to see this old woman make such a great effort to keep even a small part of it clean! I haven’t been able to
42 thinking about that all day.
I want to follow her example. I’ve decided to pick up rubbish off the ground if I meet from now on. I hope people will do the same as I do.
| 小题1: | | A．easily | B．hard | C．early | D．late |
|
| 小题2: | | A．boxes | B．bottles | C．paper | D．rubbish |
|
| 小题5: | | A．rich | B．weak | C．clever | D．sad |
|
| 小题6: | | A．slowly | B．happily | C．quickly | D．angrily |
|
| 小题7: | | A．under | B．against | C．in | D．around |
|
| 小题8: | | A．lifted up | B．dropped down | C．picked up | D．put in |
|
| 小题9: | | A．hide | B．warm | C．help | D．support |
|
| 小题10: | | A．enjoyed | B．remembered | C．continued | D．started |
|
| 小题11: | | A．everything | B．something | C．anything | D．nothing |
|
| 小题12: | | A．regret | B．keep | C．mind | D．stop |
|
可用尿素
还原（尿素中C元素的化合价为+4价），反应的方程式为：
。当消耗掉12g尿素时，转移电子的物质的量是 。
）,改流程中发生的主要反应有：
KJ/mol
。在一容积可变的密闭容器中充有10mol CO和20molH2，在催化剂作用下发生反应生成甲醇，CO的平衡转化率（a）与温度(T)、压强（P）的关系如图所示。
0（填“>”或“<”）。若达到平衡状态A时，容器的体积为10L，则在平衡状态B时容器的体积为 L。
转化成都(NH4)2SO3，再氧化成(NH4)2SO4，(NH4)2SO4溶液中离子浓度大小顺序为 ；已知25℃时，0.05mol/L(NH4)2SO4溶液的
，则
= （用含a的代数式表示，已知
的电离常数
）。