Since the beginning of history, man has been attracted by the idea of living forever, of wining the fight against death and disease. So far, this has only remained a dream, though a very powerful one. Many people have wondered whether it would be possible to find a way to preserve(保存) human bodies, and what would be the best way to preserve human bodies.

It has long been known that meat or fruit can be kept fresh for long periods by freezing; in ancient China, for example, food was stored with ice to keep it fresh. This method could also be useful for preserving humans, and in fact many people have explored this possibility.

However, most living beings that exist under warm conditions die when frozen. This is because of the harmful effects of freezing ice crystals（晶体）, which form sharp cutting shapes that harm the cells.

In the 1940s, Dr B．J. Luyet and a group of scientists in England were working on the problem of freezing cells without damaging them. Since the harm caused by ice crystals was the main cause of the damage, Luyet suggested removing some or all of the water from the cells before freezing them.

Using living cells from chicken, Luyet and his assistants discovered that they could partly dry the chicken cells, using a mixture of the white part of an egg and glycerin(甘油). Some success was achieved．The chicken cells were dried, frozen for a period of time, and then carefully unfrozen. Almost all the cells recovered when they reached normal temperatures.

Since then, the cooling of whole animals to a temperature very much below freezing point for later unfreezing has become more of a possibility, and the glycerin method would probably be used to do this. When this can be done completely and successfully, science will have moved much closer to its aim of freezing and storing incurable patients until the day they can be cured.

56．The passage is mainly about ___________.

      A．the possibility of preserving human bodies by freezing

      B．the practice of preserving food by freezing

      C．the harmful effects of freezing

      D．how to remove water from living cells

57．The idea of freezing human bodies to preserve them ___________.

      A．comes from that of keeping meat and fruit fresh by freezing

      B．was invented in ancient China

      C．could hardly be realized by people

      D．is widely accepted by the scientific world

58．According to the passage, freezing is___________.

      A．the best way of preserving food

      B．a way of removing water from living cells

      C．a way of realizing the idea of preserving human bodies

      D．harmful to living cells and cannot be used to preserve them

59．Glycerin can be used ___________.

      A．to freeze only chicken’s living cells

      B．to unfreeze living cells

      C．to remove water from living cells

      D．to change the shapes of crystals

60．The success achieved by Dr Luyet and his helpers was a long step towards ___________.

      A．keeping meat or fruit fresh

      B．living forever

      C．changing the shapes of ice crystals

      D．preserving human bodies for long periods

In a class I teach for adults, I recently did the “unpardonable．” I gave the class homework!

The assignment （任务） was to “go to someone you love   36   the next week and tell them you love them．It   37   to be someone you have never   38   those words to before or at least haven’t shared those words with for a long time．” That doesn’t   39   like a very tough assignment,   40   you stop to realize that most of the men  were over 35 and were   41   in the generation of men that were taught that expressing emotions is not “macho （男子汉气概的）．” Showing feelings or crying （heaven forbid!） was just not done   42  this was a very threatening assignment for some．

At the   43   of our next class, I asked if someone wanted to   44   what happened when they told someone they loved them．I fully expected one of the   45   to volunteer, as was usually the   46  , but on this evening one of the men raised his hand．He appeared quite moved and a bit   47  ．As he unfolded out of his chair, he began by saying, “Dennis．I was quite   48   with you last week when you gave us the assignment．I didn’t think that I had   49  to say those words to and   50  , who were you to tell me to do something that personal? But as I began driving home my conscience （良知） started talking to me．It was telling me that I   51   exactly who I needed to say I love you to．You see, five years ago, my father and I had a heated   52   and really never resolved it since that one．We   53   seeing each other unless we absolutely had to at Christmas or other family gatherings．But   54   then, we hardly spoke to each other．So last．Tuesday   55   I got home, I had convinced myself．I was going to tell my father I loved him．”

A．after          B．before          C．for             D．within

A．has to        B．ought to        C．had better     D．can

A．told           B．said           C．talked           D．spoken

A．look          B．hear          C．listen           D．sound

A．when         B．until            C．that             D．unless

A．born          B．grown          C．raised           D．risen

A．And           B．But             C．So             D．For

A．beginning      B．end           C．middle          D．stating

A．announce      B．share           C．answer          D．ask

A．men           B．adults           C．students         D．women

A．case           B．thing           C．story            D．experience

A．afraid        B．shaken          C．terrible         D．worried

A．happy        B．pleased         C．angry           D．satisfied

A．everybody     B．nobody          C．someone       D．anyone

A．else           B．except          C．beside           D．besides

A．thought      B．considered       C．knew         D．guessed

A．disagreement B．encouragement C．disappointment D．discouragement

A．imagined       B．risked           C．avoided         D．escaped

A．still               B．even            C．just           D．only

A．by the time    B．at the time       C．for the time      D．during the time

In a class I teach for adults, I recently did the “unpardonable.” I gave the class homework!

The assignment（任务） was to “go to someone you love   1  the next week and tell them you love them. It   2    be someone you have never   3   those words to before or at least haven't shared those words with for a long time.” That doesn't   4  like a very tough assignment   5  you stop to realize that most of the men were over 35 and were   6  in the generation of men that were taught that   7  emotions is not “macho（男子汉气概的）.” Showing feelings or crying (heaven forbid!) was just not done. So this was a very threatening assignment for some.

At the   8  of our next class, I asked if someone wanted to  9   what happened when he told someone he loved them. I fully expected one of the   10  to volunteer, as was usually the  11  , but on this evening one of the men raised his hand. He appeared quite moved and a bit   12  . As he unfolded out of his chair, he began by saying, "Dennis, I was quite   13  with you last week when you gave us this assignment. I didn't feel that I had   14  to say those words to, and  15  ,　who were you to tell me to do something that personal? But as I began driving home my conscience started talking to me. It was telling me that I   16  exactly who I needed to say I love you to. You see, five years ago, my father and I had a heated  17  and really never resolved it since that time. We   18  seeing each other unless we absolutely had to at Christmas or other family gatherings. But  19  then, we hardly spoke to each other. So last Tuesday   20  I got home I had convinced myself. I was going to tell my father I loved him.”

1．A．after                     B．before                 C．for                      D．within

2．A．has to                   B．ought to              C．had better            D．can

3．A．told                      B．said                     C．talked                  D．spoken

4．A．look                      B．hear                    C．listen                   D．sound

5．A．when                    B．until                    C．that                     D．unless

6．A．born                     B．grown                 C．raised                  D．risen

7．A．exchanging            B．conveying            C．express               D．explaining

8．A．beginning              B．end                     C．middle                 D．starting

9．A．announce              B．share                   C．answer                D．ask

10．A．men                    B．adults                  C．students              D．women

11．A．case                    B．thing                   C．story                   D．experience

12．A．afraid                  B．shaken                C．terrible                D．worried

13．A．annoying             B．pleased                C．angry                  D．satisfied

14．A．something           B．nobody                C．someone             D．anyone

15．A．besides                B．beside                 C．except                 D．else

16．A．thought               B．considered           C．knew                  D．guessed

17．A．disagreement       B．encouragement     C．disappointment     D．discouragement

18．A．imagined             B．risked                  C．avoided               D．escaped

19．A．still                     B．even                    C．just                     D．only

20．A．by the time          B．at the time           C．for the time         D．during the time

In a class I teach for adults, I recently did the “unpardonable.” I gave the class homework!

The assignment (任务) was to “go to someone you love 　36 the next week and tell them you love them. It 　37 to be someone you have never 　38 those words to before or at least haven’t shared those words with for a long time.” That doesn’t 　39 like a very tough assignment, 　40 you stop to realize that most of the men were over 35 and were 　41 in the generation of men that were taught that expressing emotions is not “macho (男子汉气概的).” Showing feelings or crying (heaven forbid!) was just not done 　42 this was a very threatening assignment for some.

At the 　43 of our next class, I asked if someone wanted to 　44 what happened when they told someone they loved them. I fully expected one of the 　45 to volunteer, as was usually the 　46 , but on this evening one of the men raised his hand. He appeared quite moved and a bit 　47 . As he unfolded out of his chair, he began by saying, “Dennis. I was quite 　48 with you last week when you gave us the assignment. I didn’t feel that I had 　49 to say those words to and 　50 , who were you to tell me to do something that personal? But as I began driving home my conscience (良知) started talking to me. It was telling me that I 　51 exactly who I needed to say I love you to. You see, five years ago, my father and I had a heated 　52 and really never resolved it since that one. We 　53 seeing each other unless we absolutely had to at Christmas or other family gatherings. But 　54 then, we hardly spoke to each other. So last. Tuesday 　55 I got home, I had convinced myself. I was going to tell my father I loved him.”

36．A．after　　　　　　　　　 B．before　　　　　　　　 C．for　　　　　　　　　　 D．within

37．A．has to　　　　　　　　 B．ought to　　　　　　 C．had better　　　　　 D．can

38．A．told　　　　　　　　　　 B．said　　　　　　　　　　 C．talked　　　　　　　　 D．spoken

39．A．look　　　　　　　　　 B．hear　　　　　　　　　 C．listen　　　　　　　　　 D．sound

40．A．when　　　　　　　　 B．until　　　　　　　　　 C．that　　　　　　　　　　 D．unless

41．A．born　　　　　　　　　 B．grown　　　　　　　　 C．raised　　　　　　　　 D．risen

42．A．And　　　　　　　　　 B．But　　　　　　　　　　 C．So　　　　　　　　　　 D．For

43．A．beginning　　　　　 B．end　　　　　　　　　　 C．middle　　　　　　　　 D．stating

44．A．announce　　　　　 B．share　　　　　　　　　 C．answer　　　　　　　 D．ask

45．A．men　　　　　　　　　 B．adults　　　　　　　　 C．students　　　　　　 D．women

46．A．case　　　　　　　　　 B．thing　　　　　　　　　 C．story　　　　　　　　　 D．experience

47．A．afraid　　　　　　　　 B．shaken　　　　　　　 C．terrible　　　　　　　 D．worried

48．A．happy　　　　　　　　 B．pleased　　　　　　　 C．angry　　　　　　　　 D．satisfied

49．A．everybody　　　　　 B．nobody　　　　　　　 C．someone　　　　　　 D．anyone

50．A．else　　　　　　　　　　 B．except　　　　　　　　 C．beside　　　　　　　　 D．besides

51．A．thought　　　　　　　 B．considered　　　　　 C．knew　　　　　　　　 D．guessed

52．A．disagreement　　　 B．encouragement　　 C．disappointment　　 D．discouragement

53．A．imagined　　　　　　 B．risked　　　　　　　　 C．avoided　　　　　　　 D．escaped

54．A．still　　　　　　　　　　 B．even　　　　　　　　　 C．just　　　　　　　　　　 D．only

55．A．by the time　　　　 B．at the time　　　　　 C．for the time　　　　 D．during the time

It's a small gas station that has snacks, drinks, cigarettes, and candies. The young man behind the counter knows his   __36__   by name and what they normally want to buy. He treats children and adults with equal   __37__. He reads science fiction behind the counter when business is   __38__.
One day, three people rushed in and grabbed（抓住） food off the shelves as fast as they could,   __39__   not intending to pay for it. He hit the “panic button” , then went over the counter（柜台） and   __40__   the front door. It was obvious that they were homeless, and  equally obvious that they weren't going   __41__   with their ill­gotten（非法获得的） gains. They    __42__   the food and simply crowded together in panic（惊慌地）—knowing the police were   __43__   the way.
Imagine what they must have felt like when they were told they didn't have to steal if they were that    __44__. “We have food in the back, expired (到期)but still   __45__   to eat. If you need food, you   __46__   have some.” 
They were told to   __47__   what they had dropped and put it back, and then asked to straighten out（清理） the mess. They were doing just that    __48__    the police arrived. The officers were told the situation was under control and the police were no longer   __49__.
This wasn't what they had    __50__. They were being treated as human beings who could right the wrong they'd done. Shocked, they quickly followed orders to take turns and use the restroom to clean up.
Soon three   __51__   people walked out with all the    __52__   their arms could hold. They were   __53__   that，if they needed to come back again, they were to ask and not just grab.
And then the young man went back to read until the next customer came in. He would be the    __54__ person in the world to claim he was a hero. But he gave three people something they were in desperate need of—a   __55__amount of self­respect and a little bit of hope.