题目内容

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 6 and was delivered by Caesarean section because she weighed around 100 pounds, 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.”

1.What can we know about Rosita ISA according to the passage?

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’.

2. Lactoferrin and lysozyme in milk ______.

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

3.We can infer from the last paragraph that ______.

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

4.What would be the best title of the passage?

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?

练习册系列答案
相关题目

I was in my first year of college, making friends and enjoying life, but then my whole world turned upside down. I had a heart attack. It felt like someone was stabbing (刺) me in the chest with a knife over and over again.

After three months of rest I went back to college, but then things took a turn for the worse. I was staying at my Nana’s house and woke up in the middle of the night with a terrible pain in my chest. I knew I was having a heart attack again.

I couldn’t even shout for help. Luckily my grandpa was going to the toilet and heard me falling out of bed. If it wasn’t for him, I probably wouldn’t be here.

The two holes in my heart were causing the problems and I needed an operation immediately to repair them. Unfortunately, the surgery didn’t go well and they only managed to repair one of the holes.

When I woke up from the operation, I had a really dry mouth and couldn’t wait to have something to eat and drink. The biggest shock of all came when I was told that I needed a heart transplant and was put on the register. The doctors were stunned at how quickly heart failure came on – it usually takes years, but it took my heart less than six months to get to that stage. My whole world came crashing down, but I stayed strong. It was a choice between crying every day and getting on with my life.

As time went on, life became even harder. I hated feeling weak all the time and needing help with everything. It got to the point where I thought I would never get a new heart. I was diagnosed with depression.

Even though I thought that Christmas 2008 would be my last, I really enjoyed it and even had a good New Year. Everyone was crying for me when the clock struck midnight and they told me to keep fighting.

A week later, I got a call from the doctors saying they’d found a suitable donor (捐赠人). My wish came true and thankfully the operation went well. I spent four hours in surgery where they took out my old heart and put a new one in. When I woke up I burst out crying. I had a second chance at life.

1. What happened when the author was having his second heart attack?

A. He felt less pain than he had during the previous one.

B. He realized what it was and shouted for help in time.

C. He narrowly escaped death thanks to his grandfather.

D. He decided to have an operation to repair the two holes in his heart.

2.When the author learned that he needed a heart transplant, he ______.

A. couldn’t help crying every day

B. chose to continue to fight for his life

C. felt so depressed that he tried to kill himself

D. was so anxious that his heart failure developed very quickly

3. At the beginning of 2009, the author ______.

A. was convinced that the past Christmas had been his last

B. felt blessed and grateful for his second chance at life

C. received a heart transplant but the operation didn’t go well

D. felt hopeless all the time and was diagnosed with depression

4.Which one would be the best title for the text?

A. Choices matter

B. Rebuilding my world

C. Waiting for a new heart

D. The most special Christmas

Paparazzi, (狗仔队)or “paps”, are photographers who take pictures of famous people when they are not at the center of public attention. Paps are different from professional photographers or journalists because they never take ordinary photos.

The goal for paparazzi is to get pictures that no one else will get and then sell the pictures to the buyer who offers the most money — normainly a small newspaper, magazine or website.

There is no law against paparazzi taking pictures in public places. However, there are laws that protect certain individuals. For example, child protection laws stop improper pictures of anyone under 16 from being published.

There is also no law that stops paparazzi from following celebrities(名人) and taking their pictures either. However, if paps are secretly following them and taking pictures of their faces, they could get into trouble.

Most paparazzi hang out on streets and hot spots for celebrities, waiting for the opportunity to take a picture of a star. Many stay on the streets until the early hours of the morning when celebrities are leaving nightclubs and looking a little worse for wear. However, some have other ways to make sure they get pictures. Many paps are in contact with “informers” who know the locations of celebrities at any given time. They then pass the information on to paparazzi. An informer could be anyone — from a restaurant waiter to a salesman.

Most of the time, paparazzi get a bad reputation for following celebrities. But sometimes stars or their managers will contact paps themselves and tell them exactly where and when they will go. What a love-hate relationship between paparazzi and celebrities!

1.Which of the following things paparazzi might do would be against the law?

A. Taking pictures of famous people in public places.

B. Getting unsuitable pictures of a 10-year-old actress published.

C. Following a famous woman singer secretly and taking her pictures.

D. Hanging out at the places where celebrities often appear.

2. In order to earn big money a pap has to ________.

A. make friends with famous people

B. sell the pictures to a big newspaper

C. get the only first-hand pictures

D. know the locations of celebrities

3.The fifth paragraph mainly tells us ________.

A. how much paparazzi pay for the pictures

B. how dangerous paparazzi’s job is

C. how paparazzi contact informers .

D. how paparazzi get the pictures

4. What can we infer from the passage?

A. Paparazzi always take pictures when famous people are tired.

B. Stars hate paparazzi and don’t want to be followed.

C. Informers might get paparazzi into trouble.

D.Paparazzi and famous people rely on each other sometimes.

5.The underlined phrase "hang out" probably means _______.

A. check out

B. keep away

C. wander about

D. leave out

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网