采用给水回热循环，减少了凝汽器的（）。

When I was growing up, I was embarrassed to be seen with my father. He (1) severely crippled and very short, and when we would walk together, his hand on my arm (2) balance, people would stare. I would inwardly be afraid (3) squirm at the unwanted attention. If he ever noticed or was bothered, he never let (4) .
It was difficult to coordinate (5) steps - his halting, mine impatient - and because of that, we didn’t say much as we went along. But as we started out, he always said, "You (6) the pace. I will try to adjust to you. "
Our usual walk was to or (7) the subway, which was how he got to (8) . He went to work sick, and (9) nasty weather. He almost never missed a day, and would (10) it to the office even if (11) could not: a matter of pride!
He never talked about himself as an object of pity, (12) did he show any envy of the more fortunate or able. What he looked for in others was a "good heart", and if he found one, the owner was good enough for him.
Now that I am older, I believe that is a proper standard (13) which to judge people, even though I still don’t know precisely (14) a "good heart" is. But I know the times I don’t have one myself.
He has (15) gone many years now, but I think (16) him often. I wonder if he sensed my reluctance to be seen with him during our (17) . If he did, I am (18) I never told him how sorry I was, how unworthy I was, how I regretted it. I think of him when I complain about trifles, when I am (19) of another’s good fortune, when I don’t have a "good heart".
At such times I put my hand on his arm to regain my (20) , and say, "You set the pace, I will try to adjust to you.\

阅读填空。

(A. held  B. enjoy  C. off  D. whole  E. well  F. airports

 G. stay up  H. comes  I. get  J. for  K. all  L. stops )

                                                                       Spring Festival

     The Spring Festival is the most important festival for the Chinese people and is when all family

members    1    together, just like Christmas in the West. All people living away from home go back,

    2    railway stations and long-distance (长途) bus stations are crowded with home returnees

(回家的人).

      The most important days are Spring Festival Eve and the first three days. The Chinese people now

have seven days    3    to celebrate the festival and have a rest.

     There are many customs (习俗) during the Spring Festival. The 23rd day of the 12th lunar month

is called "Xiao Nian". At this time, most families make delicious food to    4    themselves.

      After that, people begin preparing   5    the coming New Year. This is called "Seeing the New

Year in (迎新年)".

     Store owners are busy because everybody goes out to buy things for the New Year. Include oil, ice…

new clothes and shoes for the children as    6    as gifts for the elderly (老人), friends and relatives.

     Before the New Year    7   , the people completely clean the indoors and outdoors of their homes.

     Then people begin decorating their clean rooms. The Chinese character (汉字) "fu" (meaning blessing

or happiness) is a must.

     The great important time is Spring Festival Eve. At that time, all family members eat dinner together.

The meal is more luxurious (丰盛) than usual. After the dinner, the    8    family will sit together, chatting

and watching TV. In recent years, the Spring Festival party broad on CCTV is essential (基本的)

entertainment (娱乐). According to custom, each family will    9    to see the New Year in.

      A series of activities such as lion dancing, dragon lantern dancing, lantern festivals and temple

fairs (庙会) will be    10    for days. The Spring Festival then comes to an end when the Lantern

Festival (元宵节) is finished.

1._____ 2._____ 3._____ 4._____ 5._____

6._____ 7._____ 8._____ 9._____ 10._____

若甲、丙为短周期、同一主族元素组成的单质，乙、丁都是由两种元素组成的化合物，它们之间有如下图所示的转化关系，则满足条件的甲和丙可以为

A．钠和氧气

B．硫和氧气

C．碳和硅

D．氯气和溴

干细胞按其来源分类，可以有（）和（）。

垃圾填埋场渗沥液导排层最常用的排水材料是（）。

A.碎石

B.中粗砂

C.卵石