题干

阅读下面材料,在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。

    Mr. Robinson had to travel somewhere on business. As he was____a hurry, he decided to go by air. He liked sitting beside a window when he was flying, ____when he got onto the plane, he looked for a window seat. He found all of them already ____(take) except one. There was a soldier sitting in the seat beside ____. Wondering why this one had not been taken, Mr. Robinson at once went towards it.

    When he reached it, however, Mr. Robinson saw that there was a notice stuck on the seat. It said, “This seat____(keep) for proper load balance, thank you.” Because he had never seen such a kind of____(usual) notice in a plane before, Mr. Robinson was a little surprised. But he thought that the plane must be carrying something ____(particular) heavy in it, so he walked on and found____empty seat, not beside a window, to sit in.

    Two or three people tried to sit in the window seat beside the soldier, but they too read the notice and went on. When the plane was nearly full, a very pretty girl hurried into the plane. The soldier,____was watching the passengers coming in, quickly took the notice off the seat beside his and in this way succeeded in having the company of a____(beautiful) during the whole trip.

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答案(点此获取答案解析)

in,so,taken,it,is kept,unusual,particularly,an / another,who,beauty

同类题1

工业上在合成塔中采用下列反应合成甲醇:CO(g)+2H2(g)⇌CH3OH(g)△H=QkJ/mol

(1)判断该可逆反应达到平衡状态的标志是(填字母序号)____ 

a、生成CH3OH的速率与消耗CO的速率相等

b、混合气体的密度不变

c、混合气体的平均相对分子质量不变

d、CH3OH、CO、H2的浓度都不再发生变化

(2)如表所列数据是该可逆反应在不同温度下的化学平衡常数(K)

温度

250℃

300℃

350℃

K

2.041

0.270

0.012

①由表中数据判断Q____ 0(填“>”、“<”或“=”)

②某温度下,将2mol CO和6mol H2充入2L的密闭容器中,充分反应后,达到平衡测得c(CO)=0.2mol•L﹣1,此时对应的温度为____ ;CO的转化率为____ 

(3)请在图中画出压强不同,平衡时甲醇的体积分数(φ)随温度(T)变化的两条曲线(在曲线上标出P1、P2、,且p1<P2____ 

(4)要提高CO的转化率,可以采取的措施是____ (填字母序号).

a、升温  b、加入催化剂  c、增加CO的浓度  d、通入H2加压账   e、通人惰性气体加压   f、电离出甲醇

(5)已知一定条件下,CO与H2在催化剂的作用下生成5mol CH3OH时,能量的变化为454kJ.在该条件下,向容积相同的3个密闭容器中,按照甲、乙、丙三种不同的投料方式加人反应物,测得反应达到平衡时的有关数据如下:

容器

反应物投入量

1molCO、2molH2

1mol CH3OH

2mol CH3OH

平衡时数据

CH3OH的浓度(mol•L﹣1

c1

C2

C3

反应吸收或放出的能量(KJ)

a

b

c

体系压强(Pa)

P1

P2

P3

反应物转化率

α1

α2

α3

下列说法正确的是____ (填字母序号).

A、2c1>c3    B、a+b<90.8     C、2P2<P3      D、α13<1.