题干

2015年羊年春节期间,有人改用微信、QQ、电子贺卡等传递祝福,出行放弃开私家车;有人购买了实实在在的简装食品,拎起了阔别已久的手工编织年货篮;很多市民自觉地以“电子鞭炮”取代燃放鞭炮……过一个节能减排、绿色低碳的中国年,受到越来越多中国人的拥护。

你认为过一个节能减排、绿色低碳的中国年有什么现实意义?

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答案(点此获取答案解析)

①有利于节约资源、保护环境,走可持续发展道路,建设美丽中国;②有利于提高人们的环保意识,建设资源节约型、环境友好型社会;③有利于弘扬中华民族勤俭节约的传统美德,推进和谐社会建设,早日实现全面建成小康社会的奋斗目标;等等。

同类题1

任务型阅读

Things to Remember When You're Having a Bad Day

    Even the hardest days contain lessons that will help you be a better person. Feeling down? Consider these things to remember when you're having a bad day.

    No one promised life would be perfect.

    ____Don't base your happiness on meeting every expectation you set for yourself. It is good to be ambitious, but you'll never be perfect. If you expect otherwise, your life will be filled with disappointments.

    ____

    Trees that are slow to grow bear the best fruit. Don't kid yourself into thinking success will come quickly. It isn't easy to be patient, but anything worth doing requires time____

    Without hard times, you wouldn't appreciate the good ones.

    Strength does not come from winning. Your struggles develop your strengths. When you go through hardships and decide not to give up, that is strength____. It is hard to find much to smile about when you fail, but how else would you improve yourself? If you look at failures as a part of your growing process, you'll stay positive and follow your goals for as long as it takes.

    It's OK to cry sometimes.

    Do not apologize for crying. Without this feeling, we are only robots. Don't be afraid of crying____Instead, it is an acceptable way to let go of your depressed feelings. If you let those feelings build up without release, you'll have a much harder time dealing with them later.

A.Don't get sad if you lose.

B.It isn't a sign of weakness.

C.Success doesn't happen overnight.

D.It's not OK to worry now and then.

E.Don't compare your life with others'.

F.Remember: Rome was not built in a day.

G.If you look for perfection, you'll never be content.

同类题4

已知:反应I:4NH3(g)+6NO(g)⇌5N2(g)+6H2O(l)△H1

反应Ⅱ:2NO(g)+O2(g)⇌2NO2(g)△H2(且|△H1|=2|△H2|)

反应Ⅲ:4NH3(g)+6NO2(g)⇌5N2(g)+3O2(g)+6H2O(l)△H 3

反应I和反应Ⅱ在不同温度时的平衡常数及其大小关系如下表

温度/K

反应I

反应II

已知:

K2>K1 >K2′>K1′

298

K1

K2

398

K1′

K2′

(1)△H3=____ (用△H1、△H2的代数式表示);推测反应Ⅲ是____ 反应(填“吸热”或“放热”)

(2)相同条件下,反应I:4NH3(g)+6NO(g)⇌5N2(g)+6H2O(l)在2L密闭容器内,选用不同的催化剂,反应产生N2的量随时间变化如图所示.

①计算0~4分钟在A催化剂作用下,反应速率V(NO)=____ .

②下列说法不正确的是____ .

A.单位时间内H﹣O键与N﹣H键断裂的数目相等时,说明反应已经达到平衡

B.若在恒容绝热的密闭容器中发生反应,当K值不变时,说明反应已经达到平衡

C.该反应的活化能大小顺序是:Ea(A)>Ea(B)>Ea(C)

D.增大压强能使反应速率加快,是因为增加了活化分子百分数

(3)一定条件下,反应II达到平衡时体系中n(NO):n(O2):n(NO2)=2:1:2.

①保持恒温恒容,再充入NO2气体,NO2体积分数____ (填“变大”、“变小”或“不变”)

②关于平衡体系反应Ⅱ:2NO(g)+O2(g)⇌2NO2(g);△H2说法正确的是____ .

A、该反应焓变为负值

B、升高温度,逆反应速率增大,正反应速率减小,反应逆向移动

C、不论增大压强还是减小压强,正方向速率改变的程度更大

D、平衡正向移动,NO的转化率一定增大

E、平衡体系中加入NO2,平衡逆向移动,△H2减小

F、混合气体颜色加深说明平衡向右移动,颜色变浅则向左移动.