4．Scientists in Argentina have created the world's first cow to own two human genes that will enable——青夏教育精英家教网—

4．Scientists in Argentina have created the world's first cow to own two human genes that will enable it to produce human-like milk，which is matchless up to now．It is a breakthrough in the area of clone．
Genetic engineering was used to introduce the"mothers'milk"genes into the animal before birth，according to the National Institute of Agribusiness Technology in Buenos Aires．
As an adult，the cloned cow"will produce milk that is similar to humans"in what will prove"a development of great importance for the nutrition of infants"，it said in a statement．
"The cloned cow，named Rosita ISA，is the first one born in the world that owns two human genes that contain the proteins present in human milk，"the statement said．
In April，scientists in China published details of research showing that they had created GM Holstein dairy cows which produced milk containing proteins found in human breast milk．
But the Argentine team says the Chinese only introduced one human gene，whereas their research involved two genes meaning the milk will more closely resemble that of humans．
Rosita ISA was born on April 6and was delivered by Caesarean section because she weighed around 100pounds，roughly twice the normal weight of Jersey cows．
Adrian Mutto，from the National University of San Martin said"Our goal was to raise nutritional value of cows'milk by adding two human genes，the protein lactoferrin and lysozyme，which can provide newly-born babies with anti-bacterial and anti-viral protection．"
Cristina Kirchner，President of Argentina，said that the scientific institute"makes all proud．"She also revealed that she had rejected the"honor"of having the cow named after her．"They came to tell me that the name is Cristina，but what woman would like to have a cow named after her？It appeared to me to be more appropriate to call it Rosita．"
28．What can we know about Rosita ISA according to the passage？D
A．It is as heavy as Jersey cows．
B．It is the first cow with a human gene．
C．Its milk has the same proteins as human breast milk．
D．Its milk has larger nutritional value than others'．
29．Lactoferrin and lysozyme in milkA．
A．are good for babies'health
B．help provide more milk from cow
C．can increase the production of milk
D．can offer more proteins in cow milk
30．We can infer from the last paragraph thatB．
A．it is hard to name the cow
B．honorable as it is，no women like the cow named after them
C．the president wants the cow named after her
D．Cristina Kirchner objects to creating the cloned cow
31．What would be the best title of the passage？C
A．Scientists in Argentina could produce human milk
B．The cloned cow would bring about benefits
C．Scientists create cow that produces"human"milk
D．How was the cloned cow born？

3．Both of my parents worked full-time when I was a little girl，so my grandmother would stay at our house during the day．We would watch game shows in the living room．Our favorite was The Price is Right．We would call out our answers along with the contestants．
When I got older and started going to school，we couldn't watch our game shows regularly．That was okay with me，though，because the one thing I liked better than watching game shows with my grandmother was helping her bake cakes．Watching her in the kitchen was amazing：she never seemed to need the recipes but everything she made tasted delicious．
At first I would just sit in the kitchen and watch，even though I didn't understand what she was doing，As I got older，she let me help with the easy parts，such as measuring the sugar．The day she let me separate the eggs，I felt like I had found complete pleasure．
At last，my parents decided that I could take care of myself，and my grandmother stopped oming over every day．The love of baking，however，stayed with me．I started baking by myself，and even if the cookies ended up burnt sometimes，more often they turned out pretty well．I tried out new recipes，and whenever I got to athorny part，I would call my grandmother for advice．Sometimes I would call her just to talk，too．I felt like I could talk to her about anything．
My grandmother passed away ten years ago，but I still think of her every day．Last week，I found a recipe book she made for me．It included her recipes for brownies，cookies，and my favorite，lemon pie．As I looked through the pages，I thought I could hear her voice．She was the one who taught me not just about baking，but about life．
21．What's the author's purpose in writing this passage？B
A．To show her good baking skills．
B．To remember her grandmother．
C．To talk about her happy family life．
D．To describe her childhood memories．
22．While helping her grandmother bake，the authorA．
A．found it interesting and appealing
B．turned out to be a troublemaker
C．hoped to make a living by baking
D．regretted missing the game shows
23．What does the underlined word"thorny"in Paragraph 4most probably meanD
A．basic．
B．common．
C．special．
D．difficult．
24．The passage is mainly developed byC．
A．analyzing causes
B．making comparisons
C．following the time order
D．examining differences．

2．假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文．文中共有10处语言错误，每句中最多有两处．每处错误仅涉及一个单词的增加、删除或修改．
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词．
删除：把多余的词用斜线（\）划掉．
修改：在错的词下划一横线，并在该词下面写出修改后的词．
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分．
When I was a small child，my parents didn't have many money and I had very few Christmas gifts．My cousin was ten and he had gone out singing Christmas songs and made quite a bit money．Without tell anyone he went to the shop and spent almost every penny of his money in a teddy bear．Then he was used the change to buy a little necklace with a glass charming （迷人的） heart on them．He came to my house and told my parents what he had bought these things for me as Christmas gift．Twenty-five years later the teddy bear has been thrown away，but I even have the little necklace in my jewelry box to remind me of my cousin kindness．

1．Every year thousands of people get hurt or die when they are crossing the road．Most of these people are old people and children．Old people often get hurt or die because they can't see or hear very well．Children usually meet with accidents because of their carelessness．They forgot to look and listen before they cross the road．
How can we lessen（减少） traffic accidents？All of us must obey the traffic rules．For the drivers，they shouldn't drive too fast．If they drive too fast，it will be very difficult to stop the cars in a very short time．For the pedestrians（行人），it's very important to be careful when they are walking on the road．Therefore，when we walk across the road，we must try to walk along the pavements．We must stop and look both ways before crossing the road．Look left first，next look right，then look left again．Only when we are sure that the road is clear，we can cross it．The right way to cross the road is to walk quickly．It's not safe to run．If people run across the road，they may fall down．Teens should try to help children，old people or blind people to cross the road，and never play in the street．
21．Which of the following is NOT the right way to cross the road？B
A．Stop and look both ways．
B．Run quickly．
C．Make sure that the road is clear
D．Walk quickly．
22．Why do most old people often get hurt or die when they are crossing the road？C
A．Because they are not careful．
B．Because they forget to look and listen．
C．Because they can't see or hear very well．
D．Because they often run across the road．
23．The best title for this article may beB．
A．How to lessen traffic accidents？
B．How to cross the road？
C．Please obey the traffic rules．
D．Meeting with traffic accidents．
24．As a student，you canD to try to lessen traffic accidents．
A．let drivers drive slowly
B．play in the street carefully
C．run across the road quickly
D．help children to cross the road．

20．A few weeks ago，I was taking a quiet walk in my backyard（71）whenI saw a baby bir1．d lying on the grass．It must（72）have fallen（fall） off the nest high in the branches．I was sure it was dead．But as I tried to pik it up，suddenly it moved．
To put it back，I placed a ladder（73）againstthe tree and tried to get it near the nest．At that time，I saw a neighborhood cat in the branches．Immediately it came to my mind（74）thathe must have shaken the bird out of the nest when climbing up alone the branches and trapped（75）himself（he） up in the tree as well．Climbing up through the branches，I seized him，gave him a scolding and（76）dropped（drop） him softly to the ground．He ran off as fast as he could．
I（77）gently（gentle） picked up the baby bird，climbed up the ladder and，（78）stretching（stretch） my arm out as far as I could，I placed it in the nest．Then I said prayers for it．
In the weeks that followed I looked up at（79）thenest several times，but only saw the mother bird．I may never know whether my efforts have made a（80）difference（different） or not．But trying was enough．Sometimes love has to be its own reward．

19．What didn't the man do at the weekend？
A．Go sailing．
B．Ride horses．
C．Walk in the woods．

18．What can we know from the conversation？
A．The woman thought there were no tickets left．
B．The woman thought the tickets were available tonight．
C．The audience were deeply impressed with the concert．

17．What does the man say about Mary？
A．She seldom works．
B．She often changes her job．
C．She enjoys working at the same job．

16．What is the lady going to do now？
A．Go to the bank．
B．Go to the hotel with the man．
C．Have lunch with her friend．

15．Where are the two speakers？
A．In a shop．
B．In a post office．
C．In a restaurant．

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