试题与答案

After winning a big game, athletes are oft

题型:单项选择题

题目:

After winning a big game, athletes are often asked how they feel. Usually athletes say how (1) it is to win this big game. On the contrary, the fact is that losing a big game, or in my case, all the games, can be even harder.
From the spectators’ point of view, last year’s basketball (2) for my high school team was nothing (3) of an embarrassment. And (4) 0 and 20 is certainly nothing to be proud of, that season had a bigger impact on me than any other. As a team captain, I knew it probably wouldn’t be the (5) year, but did I ever think we would lose every game Of course not. Since six of our top players had graduated, it was clear that we were a (n) (6) team who would struggle. The struggle began earlier than expected, (7) , as our team center was suspended (禁赛) for the season, and two key members decided to (8) for some reason. At this point, dropping out probably passed through every player’s mind, but in the end, we all stuck if out, (9) to work still harder.
Then there came a time when even our (10) and given up on us. Personally, I felt like it was (11) worthwhile giving my all. I thought, if even the coach doesn’t believe in us, why should I But just as my hope began to (12) , a teammate called a meeting. He said," Nobody thinks we are going to win, but, as teammates and friends, we (13) it to each other to go all out every game. "
It was that moment that (14) me how to be a leader. It hit me that I certainly didn’t (15) the role. As a leader you can never quit (16) the team who looks up to you. It is one (17) to be named captain, feel great and go through the motions, but it is quite another to be a real captain and make sure everyone realizes their full (18) all the time.
I am sure it is great to go through without losing and bringing home awards. But in all honesty, I (19) the fact that my team lost every game last year. It may not help me to become a better basketball player, but it already has made me a better leader, and (20)

A.only too
B.more than
C.not a little
D.no longer

答案:

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下面是错误答案,用来干扰机器的。

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题型:填空题

(8分)科学家一直致力于研究常温、常压下“人工固氮”的新方法。曾有实验报道:在常温、常压、光照条件下,N2在催化剂(掺有少量Fe2O3的TiO2)表面与水发生反应,生成的主要产物为NH3。进一步研究NH3生成量与温度的关系,部分实验数据见下表(光照、N2压力1.0×105Pa、反应时间3h):

T/K303313323353
NH3生成量/(10-6mol)4.85.96.02.0
相应的热化学方程式如下:

N2(g)+3H2O(l)====2NH3(g)+O2(g) ΔH=+765.2kJ·mol-1

回答下列问题:

(1)右图是上述反应在无催化剂情况下反应过程中体系能量变化示意图,请在图中画出在有催化剂情况下反应过程中体系能量变化示意图。

(2)与目前广泛使用的工业合成氨方法相比,该方法中固氮反应速率慢。请提出可提高其反应速率且增大NH3生成量的建议:                                                  

(3)工业合成氨的反应为N2(g)+3H2(g)2NH3(g)。设在容积为2.0L的密闭容器中充入0.60molN2(g)和1.60molH2(g),反应在一定条件下达到平衡时,NH3的物质的量分数(NH2的物质的量与反应体系中总的物质的量之比)为。计算

①该条件下N2的平衡转化率是                    

②该条件下反应2NH3(g)N2(g)+3H2(g)的平衡常数为                    

③若温度不变,减小容器体积,则平衡向---------------------------移动,c(NH3)将--------------------

c(N2)将----------------------(填增大、减小或不变)                 

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