Medicine comes in lots of different packages. Painkillers in a tablet can make your headache go away. Antibiotic cream (抗菌素膏) from a tube can prevent your cuts from becoming infected. But can medicine come packaged in chicken eggs?
A team of scientists from Scotland say “yes”. They’ve engineered special chickens that lay eggs with disease-treating drugs inside.
These eggs come from chickens that have been engineered to produce certain drugs inside their egg whites.
These drugs are made of molecules called proteins(蛋白质). Animals make thousands of proteins — they’re the main element in skin, hair, milk and meat. Since animals can make proteins easily, they’re good candidates (候选者) for making protein drugs.
Researchers have already made cows, sheep and goats produce protein drugs in their milk. But chickens are cheaper to take care of, need less room, and grow faster than these other animals. Those qualities could make chickens a better choice to become living drug factories, says Simon Lillico of the Roslin Institute near Edinburgh, Scotland.
Lillico and a team of researchers changed chickens’ DNA — the code that tells cells how to make proteins — so that the birds’ cells made two protein drugs. One drug can treat skin cancer, and the other treats a nerve disease called multiple sclerosis (多发性硬化).
The scientists changed the chickens’ DNA so that the birds made these drugs only in their egg whites. This protects the chickens’ bodies from the drugs’ possible harmful effects and makes it easy for scientists to collect the drugs. If you cut your finger, you may use ________ to cure it.
| A．painkillers in a tablet | B．antibiotic cream from a tube |
| C．chicken eggs | D．protein drugs |
Which of the following statements is NOT true?
| A．Scientists from Scotland have succeeded in packing medicine into chicken eggs. |
| B．The drugs are made of molecules called proteins. |
| C．Scientists chose chickens for their experiments because chicken eggs taste delicious. |
| D．The animals are good candidates for making protein drugs. |
The drugs in special chicken eggs can ________.
| A．treat lung cancer | B．help reduce headache |
| C．change people’s DNA | D．treat multiple sclerosis |
We can infer from the passage that ________.
| A．eating eggs is the best choice for the patients now |
| B．scientists changed the chicken’s DNA and put all the drugs in chicken eggs |
| C．we may eat special eggs as drugs when we are sick in the future |
| D．the drugs produce harmful effects on the chicken’s bodies |
The best title for the passage is ________.
| A．Chicken Eggs to Replace Medicine | B．Chicken Eggs as Drug |
| C．Chicken Eggs and Medicine | D．Chicken Eggs and Animal Milk |
October 15th is the Global Handwashing Day. Activities are planned in more than 20 countries to get millions of people in the developing world to wash their hands with soap. For example, donors（捐赠者） will give 150,000 bars of soap to schools in Ethiopia.
Experts say people around the world wash their hands every day, but very few use soap at so-called important moments. These include after using the toilet, after cleaning a baby and before touching food.
Global Handwashing Day is the idea of the Public-Private Partnership for Handwashing with Soap. Partners include the United Nations Children’s Fund, American government agencies, the World Bank and soap makers Unlever and Procter and Gamble. The organizers say all soaps are equally effective at removing disease-causing germ(细菌). They say the correct way to wash is to wet your hands with a small amount of water and cover them with soap. Rub（揉搓） it into all areas, including under the fingernails（指甲）. Rub for at least twenty seconds. Then rinse well under running water. Finally, dry your hands with a clean cloth or wave them in the air.
The Partnership for Handwashing says soap is important because it increases the time that people spend in washing hands. Soap also helps to break up the dirt that holds most of the germs. And it usually leaves a pleasant smell. The Partnership for Handwashing also says washing with soap before eating or after using the toilet could save more lives than any vaccine(疫苗)or medicine. Hand washing could also prevent the spread of other diseases. When people get germs on their hands, they can infect（感染）themselves by touching their eyes, noses or mouths. Then they can infect others.What’s the best title for this passage?
| A．Say no to washing hands in the wrong way. |
| B．Find out why washing hands carefully is so important. |
| C．Hand washing: so important----it gets a day of its own. |
| D．Want to live a longer life?-wash your hands. |
The word “rinse” in Paragraph 3 probably means ______.
| A．to dry your hands | B．to wash away the soap |
| C．to rub your hands carefully | D．to clean your fingers |
The last paragraph mainly tells us ______.
| A．how to wash your hands correctly |
| B．why washing hand with soap is so important |
| C．the dangers of washing hands without soap |
| D．when we should especially wash our hands with soap |
In which part of newspaper would you most probably read this passage?
| A．Medical care | B．Public service | C．Health report | D．Advertisement |
Hello and welcome! My name is Shelley Ann Vernon and I am glad that you want to find out more about teaching English through games. Right here you will find ways to get great results in the classroom for children aged 4 to 12; ways that from my experience will bring more success and joy into the lives of the children you teach.
You'll learn how to make your serious classes fun, how to ensure everyone gets better grades, how to help stimulate(刺激) the brighter kids while nurturing the slower ones, and how to associate fun with learning by teaching vocabulary grammar through language games. Earn even more appreciation, love and respect from your students and their parents for your teaching.
The games presented here work for ESL (English as a Second Language) pupils aged 4 to 12. These games are most suitable for beginners to intermediate(中级的) students.
Don't take my word for it; read evidence from teachers and parents：
| I found it valuable right away! Although I only bought your book on Monday, and today is Wednesday, I want you to know how valuable I have found it to be. I have used a couple of the games in school already and the children loved them. Most importantly, they were learning and reviewing English at the same time. Can I admit that I also enjoyed my lessons more? Gila Goldberg, Jerusalem |
| The games help with learning difficulties! My daughter Aurore has learning difficulties and since coming to your classes she has gained confidence and has improved in all subjects at school. Mrs. J. Brown, Canterbury, Kent, the UK |
Click here to order now with our secure server. Remember, if you are not satisfied, just let us know and we will refund(退款) you in full. You still get to keep the essential bonus material for free, and that's a rare timesaving gain, plus a value of 25 dollars.The passage is mainly written for ________.
| A．students | B．girls | C．teachers | D．doctors |
Which of the following does the writer agree with?
| A．Teachers should make their classes serious. |
| B．A good class should associate fun with learning. |
| C．Only smart children can learn from the games. |
| D．Only pupils aged 2 can make good use of the games. |
If you are unsatisfied with the book, ________.
| A．you can complain to a local newspaper or Shelley Ann Vernon |
| B．you can get half your money back and keep the material |
| C．you can get 25 dollars back, but you have to return the product first |
| D．you will get your money back without returning the essential bonus material |
The writer wrote the passage to ________.
| A．tell teachers how to teach |
| B．recommend games to kids |
| C．persuade teachers to buy a book |
| D．show her students' good performance |
There are some new drivers going back to school. Teens who have recently gotten their driver's licenses may be taking the wheel to school this fall. However, parents fear when their teen starts driving. And it turns out that such parental fears are justified, so it's worth reviewing how to keep your teen safe while he or she is behind the wheel.
Motor vehicle crashes are the leading cause of death among US teens. Drivers 16 to 19 years old are at the greatest risk of crashes. In fact, their risk is 4 times greater than that of older drivers. The teens at the greatest risk are those who are male, those carrying other teenage passengers in the car, and those still in their first year of driving. Nearly 50 percent of teen deaths related to automobile crashes happen on Fridays, Saturdays, or Sundays between the hours of 3 pm and midnight.
Why are teens at higher risk of motor vehicle crashes?
Development. Teens haven't completely matured mentally and have greater risktaking behaviors, possibly because they tend to underestimate the risk associated with a particular behavior. Teens also have a greater tendency to speed and to drive too close to the cars in front of them.
No seatbelts. Teens have the lowest rate of seatbelt use among all driving groups.
Alcohol. A least 25 percent of motor vehicle deaths in teens are related to drinking alcohol.
Technological distractions(分散注意力的事)．Cellphones，texting，MP3 players，and the like can all distract drivers greatly—and who more than teenagers?
Be aware of your teen's driving practices and discuss safe driving habits when opportunities present themselves. Check out the applications and devices now available for restricting your teen's use of technology while driving. Some applications alert you to the danger when your teen is texting while the vehicle is moving. Another device blocks incoming and outgoing texts when the car is running—incoming messages get an automatic reply (eg. “I'm driving right now”), and phone calls go directly to voicemail. You can also get notifications if your teen tries to shut off the program. There are also GPS programs that let you know your new driver's whereabouts at all times. All in all, you can't be too cautious when teaching your teen how to be safe on the road.What factor is least related to the teen drivers' high risks of crashes?
| A．Drivers' age. | B．Passengers' sex. |
| C．Driving experience. | D．Driving time. |
Teens probably turn away their attention from driving when they are ________.
| A．using no seatbelts | B．drinking water |
| C．carrying passengers | D．answering cellphones |
According to the passage, which should be prevented during teens' driving?
| A．Texting. | B．GPS programs. |
| C．Automated replies. | D．Voicemail. |
The author writes the last paragraph in order to ________.
| A．offer parents practical suggestions |
| B．summarize teens' driving practices |
| C．advocate different driving habits |
| D．set an example for the teens |
Threequarters of a million tourists flock to the white beaches every year, but this booming industry has come at a price. Poisonous smoke rising from open fires, rubbish made up of plastic bottles, packets...it's_a_far_cry_from the white sands, clear waters and palm trees that we associate with the Maldives(马尔代夫), the paradise island holiday destination set in the Indian Ocean.
Of its 200 inhabited islands, which are spread across an area of 35,000 square miles, 99 are good resorts(度假胜地). So many tourists come every year, more than double the local population. Of these tourists, over 100,000 travel from the UK. The capital, Malé， is four times more densely populated than London. Given these facts, it's hardly surprising that the Maldives has a waste disposal problem.
Years ago, when the tourists left, the government had to deal with a stream of rubbish. Their solution was to turn one of the islands into a dumping ground. Four miles west of Malé is the country's dumping ground, Thilafushi. What you are seeing here is a view of the Maldives on which no honeymooners will ever clap eyes. Each visitor produces 3.5 kg of waste per day. The country dumps more than 330 tons of rubbish on the island every day.
Now, since many waste boats, fed up with waiting seven hours or more, directly offload their goods into the sea, the government of the Maldives has banned the dumping of waste on the island. So, the waste boats ship the rubbish to India instead.What is the main cause of the waste disposal problem?
| A．The big local population. |
| B．Too many waste boats. |
| C．The large number of tourists. |
| D．Open fires on the islands. |
The underlined part can probably be replaced by “________”．
| A．it's quite similar to | B．it's a long distance from |
| C．it's a loud shout from | D．it's totally different from |
What can we learn from the text?
| A．It is much more crowded in Malé than in London. |
| B．Another island will be used as a dumping ground. |
| C．No honeymooners are willing to visit the Maldives. |
| D．Waste on islands will be offloaded directly into the sea. |
What's the author's purpose in writing the text?
| A．To attract more tourists to the Maldives. |
| B．To state the waste disposal problem in the Maldives. |
| C．To call on us to protect the environment. |
| D．To explain the causes of pollution in the Maldives. |
There is no question that teenagers need rules, which is often not a difficult thing for parents to give.What can be more challenging is giving teenagers their freedom.It can be difficult to draw the line between the two.However, some issues cannot be changed by discussion and require firm rules.For instance, rules should be established concerning driving the family car.
I will admit that I have no problem coming up with rules.To me they make life easier and they leave no room for questioning.What can be more difficult, however, is giving my teens their freedom.I guess there are really two primary reasons for this.One is that sometimes I am afraid to give them freedom.The second is that I'm not always so sure what the freedom should be.
It helps that I have a husband with whom I can discuss these problems.We talk about them,_give our thoughts and then we come up with an agreement.Sometimes one of us might be more unwilling but we know that there comes a time when we really do have to learn how to let go of the reins(缰绳) a bit.
If we try to make life have nothing but rules, we are more likely to see our teen's rebelling(反抗)．They need to know that while we do have certain expectations, we also trust them to begin making their own choices and decisions.How else can they do that unless they are given the space and room to do it?
It's really all about balance and I will be the first to admit that it can be a challenge to carry out.However, it is a necessary part of growing up.Yes, teens definitely need rules but they also need freedom.According to the first paragraph, it is difficult to decide ________.
| A．whether the children need rules |
| B．whether the children should be given freedom |
| C．how much freedom should be given to children |
| D．what issues require nonnegotiable rules |
According to the writer, only rules without freedom will make the children ________.
| A．strongwilled | B．rebellious |
| C．weak | D．independent |
Which of the following is TRUE according to the text?
| A．Rules are difficult to make for parents. |
| B．Rules and freedom are similarly important. |
| C．We should give children freedom as much as possible. |
| D．Rules are more important than freedom. |
What does the underlined word “them” in Paragraph 3 probably refer to?
| A．Problems. | B．Children. | C．Rules. | D．Reasons. |