A药较B药安全，正确的依据是

A:A药的LD比B药小 B:A药的LD比B药大 C:A药的ED比B药小 D:A药的ED/LD比B药大 E:A药的LD/ED比B药大

下列药物中治疗指数最大的是

A:B药LD=100mg,ED=50mg B:C药LD=500mg,ED=250mg C:A药LD=50mg，ED=5mg D:D药LD=50mg,ED=10mg E:E药LD=100mg,ED=25mg

治疗指数是

A:CL B:AUC C:ED D:LD/ED E:ED/LD

I close my eyes and can still hear her―the little girl with a ___26___ so strong and powerful we could hear her halfway down the block. She was a(n) ___27___ peasant who asked for money and ___28___ gave the only thing she had――her voicE. I paused outside a small shop and listeneD. She brought to my mind the ___29___ of Little Orphan AnniE. I could not understand the words she ___30___, but her voice begged for ___31___. It stood out from the noises of Arbat Street, pure and impressive, like the chime of a bell. She sang ___32___ an old-style lamp post in the shadow of a building, her arms extended and ___33___ thrown back. She was small and of unremarkable looks. Her brown hair___34___ the bun(发髻) it had been pulled into, and she occasionally reached up to ___35___ a stray piece from her facE. Her clothing I can’t recall. Her voice, on the other hand, is ___36___ imprinted in my minD.

I asked one of the translators about the girl. Elaina told me that she and hundreds of others like her throughout the ___37___ Soviet Union add to their families’ income by working on the streets. The children are unable to ___38___ school, and their parents work fulltimE. These children know that the consequence of an ___39___ day is no food for the tablE. Similar situations occurred during the Depression(萧条) in the United States, but those American children were ___40___ shoeshine boys of the ___41___. This girl was real to mE.

When we walked past her I gave her money. It was not out of pity ___42___ rather admiration. Her smile of ___43___ did not interrupt her singing. The girl watched us as we walked down the street. I know this because when I looked back she smiled again. We ___44___ that smile, and I knew I could never forget her courage and ___45___ strength.

26-30CDABD  31-35ADCBA  36-40BCADC  41-45ACDBB

One evening, sitting at the window sewing, my mother called me, “Come here,” she saiD. “ 31 .” She held my head against her 32 , and after a puzzled moment I felt a 33 foot drumming on my cheek. “You see?” she said, “It’s alivE. You can 34 it, can’t you ?” I accepted it, as I accepted everything, without 35 . It was as good a place for the baby to be as any other and I never 36 about why it got in nor how it would finally get out.

A baby would come? I 37 noticeD. That there were soon to be 38 of us would not make any difference to mE. I had my place, star-like in my small universE. 39 , certainly not a baby, could 40 that.

I was 41 , however. I soon found that things had 42 a great deal. I had never been the 43 . Now I was no longer the youngest. I was simply the one in the 44 . My sister had certain 45 because she was the oldest, and my brother was the baby, the son, the much 46 boy. More than that, he had all sorts of things that never came to mE.

As he grew, it became 47 that my brother had been the center of everything. People smiled when they saw him. He made them happy 48 by being therE. And he had the sort of childish beauty that always turns heads and draws a second 49 . He was so charming that he was immediately loveablE. Later he also turned out to be 50 , although perhaps not quite as clever as I was.

31―35  CADBA    36―40 DABCB             41―45         46―50  DBDAC

My family moved into our home nine years ago and we spent a lot of time and energy in the yard to get it looking like it does today. We live on a corner and the yard is 41 by a rock wall. We call this area our “rock garden”.

Last summer, I found a tiny little 42__in the yard that I could not immediately identify. I knew I didn’t plant it. We 43 to let it continue growing until we could 44 what it was.

Weeks passed and as I made my way back to the 45 plant, it appeared to be a sunflower. I decided to treat it with care and 46 the weeds around it. As I pulled rocks from the area to get to the weeds, I noticed something 47 . The sunflowers had not 48 where I saw the stalk (茎) began. It 49 had begun under a big rock and grown under and around it to reach the 50 .

That’s when I 51 that if a tiny little sunflower didn’t let a big rock stand in its 52 of developing, we too have the capability of doing the same thing. 53 our environment begins to see that we believe in ourselves like that little sunflower, we can 54 the same nutrient as well.

55 , we need to believe in ourselves knowing we have the capabilities in 56 our desires. Like the sunflower, it knew it had the capability to overcome its obstacle because it 57__ in the universal truth and had 58 that it would succeeD.

Stand tall like the sunflower and be 59 of who and what you are and the environment will begin to support you. You will find a way to go under or 60 your big obstacle in order to reach your desires.

41-45 ACBDB                        46-50ADBDC        51-55 ABDCA              56-60 CBAAD

Sometimes I doubt whether there is love between my parents. Every day they are very __21__trying to earn the money for my brother and me to go to school. They don’t act in the __22__ ways that I read in books or see on TV. In their opinion, “I love you” is too __23__ for them to say. Sending each other flowers on Valentine’s Day is __24__ more out of the question. Finally Dad becomes impatient. When he’s very tired from the hard work, he will lose __25__.

One day, Mum was sewing a quilt (床罩). I silently sat down beside her.

“Mom, I have a question to ask you. Is there love between you and Dad?”

Mom stopped work and __26__ her head with __27__ in her eyes. She didn’t answer at oncE.

I was __28__ because I thought I had hurt her. I was in a great embarrassment, not knowing what to do. At last she said __29__ “Susan, look at this thread (线). Sometimes it appears, but most of it __30__ in the quilt. The thread really makes the quilt strong. If life is a quilt, then love should be a thread.It can __31__ be seen anywhere or anytime, but it’s really __32__. Love is insidE.”

I couldn’t understand her __33__ the next spring, when Dad suddenly got sick seriously. Mom had to stay with him in the __34__ for a month. When they returned, it seemed that both of them had had a serious illness.

After that, every day at __35__ and dusk (黄昏), Mom helped Dad walk slowly on the country road.It seemed they were the most harmonious __36__.

The doctor had said Dad would __37__ in two months, but two months later he still couldn’t walk by himself. All of us were worried about him.

“Dad, how are you feeling now?” I asked one day.

“Susan, don’t worry about mE. To tell the truth, I just like walking with your mom. I like this kind of lifE.” __38__ his eyes, I know he loves Mom deeply.

Once I thought love meant flowers, gifts and sweet __39__. But from this experience, I understand that love is just a thread in the quilt of our __40__. Love is inside, making life strong and warm.

21―25  BACAC           26―30  AADBC    31―35  BCDDC        36―40  CBABC

We just moved into our new flat last week, and we love the new place too. I was sitting outside my new home yesterday, watching the world go by.

There were people in 36 , in a hurry to get to their next appointment. There were 37 flying nearby, insects just as busy as the people in cars, flowers 38 in the warm and damp climatE.

Inside the house, my children were also busy, as ever, making a 39 of the house , which my wife and I would soon clean up, their natural 40 defeating our previous requirements for them not to play with lotion ( 护肤液 ) or take things 41 .

The sky was 42 cloudy and there was a cool breeze ( 微风 ), quite gentle and 43 actually.

It’s not often that 44 of us just sit quietly, enjoying the world .

Why not?

What is 45 important that it can't wait until later? 46 email must be answered right this moment? Do we really need to 47 all those articles online, all those messages from 48 , and all those newspapers and magazines? Do we need to 49 the television and radio and Internet on all the time?

Is life passing us by as we keep our minds 50 ? Are we 51 the beautiful world around us as we constantly think about the 52 ― what we will do, our 53 about what might happen ― and the past ― what we did wrong, what someone else did to us, what we said, what 54 have happened?

When was the 55 time you just sat, and observed? Why not do it today?

36-40 BCACD  41-45 ACBCD  46-50 CCCDB  51-55 BADCD

读“某厂可能建厂的地点与成本分析表”，据此回答

A:①③ B:②④ C:①④ D:②③

读“某厂可能建厂的地点与成本分析表”，据此回答

A:甲地 B:乙地 C:丙地 D:丁地