Researchers in the US say they might have discovered how to fight against and even _ some processes of ageing, at least in mice. Injecting the blood of young mice into the older ones improved their brainpower, a study found. Scientists at Stanford University plan to carry out trials in people in the hope that new treatments for dementia can be developed. "There are factors present in blood from young mice that can recharge an old mouse's brain so that it functions more like a younger one,"says Dr. Tony from Stanford University School of medicine. In the study published in Nature Medicine, mice aged 18 months were given injections of the blood taken from mice aged 3 months. The injected mice performed better on memory tests than mice of the same age that had not been given the blood. Dr. Tony said it was not known whether the same was true of humans, but a trial was planned. A research center in UK said the treatment restored certain aspects of learning and memory in mice, but was of unknown importance to humans. The research, while very interesting, did not test the type of brain damage that was seen in dementia, which is not a necessary consequence of ageing. Meanwhile, two similar studies by a separate team have thrown more light on how young blood may benefit the old, in mice at least. A substance in the blood of mice previously shown to have an anti-ageing effect on heart muscle also improved brain cells, according to a Harvard team. The research, published in Science, found the blood factors encouraged the growth of brain cells in old mice, and restored their sense of smell. The same chemical also improved muscle power of aged mice, the researchers found. What's the author's attitude to the anti-ageing studies? A) supportive B) objective C) negative D) doubtful
B
"You're leaving again?" asked my daughter as she saw me packing my carry-on. More than her words, it was her face that pierced my heart ---I could see how _ she was. "It's only for two nights, "I explained. But that didn't matter to her. It was just one more trip after barely being home for five days. I decided in that moment to travel less whenever possible and I managed to avoid flying altogether for most of the summer. As a result, it was a summer full of discoveries. I realized that my kids really were proud of me. In their time away from me they had learned lessons I couldn't have imagined. Recently I began traveling a lot again. But this time it was different, mainly due to the fact that I had seen firsthand that my children value strong female role models. They realize that hard work pays off. Being away from them even for a day at a time in many ways had done them a lot of good. In particular, being a working mom is teaching my daughter how important it is to be independent and that you can follow your dreams. In many ways, her idea of a professional woman is much more realistic than what I imagined when I was her age. I think that even at nine years old she already knows that for all the success you might achieve, there is a price to pay, whether it's long hours, spending time away from those you love, or simply not having the energy to have fun at times. I know the wishes I would devote all of my time to her, but honestly, even if I didn't work I would rather she learned not to depend on me for everything, She needs to realize that she can fly on her own --- and that isn't possible if I am hovering over her every single second of the day . I have also realized that having a career sets a good example for my son. He is not afraid of a strong woman, and has a great respect for them. When he's older, this will help him build healthier relationship. Therefore, for all the working moms out there who work long hours, remember to value the positive lessons you might be teaching your kids. What is the author's main purpose in writing the text ? A) To tell stories about her two kids B) To show how to teach kids about careers C) To encourage women to work as hard as possible D) To prove kids can benefit a lot from working moms
D
Q: You have a special card which operates the electronic lock on your room door and a key for the main door of the door of the hotel. These are your responsibility and should never be lent to anyone, including your fellow classmates. If you lose them you will be charged PS20 per replacement. Do not leave your room unlocked even for short periods. Unfortunately, theft from student hotels is very common and insurance companies will not pay for stolen goods unless you can prove that your room was broken into by force. _ There are rarely any rooms available for visitors, except at the end of the summer term. Stan Jenkins, the hotel manager, will be able to tell you and can handle the booking. A small charge is made. Stan also keeps a list of local guesthouses, with some information about what they're like, price, etc. You are also allowed to use empty beds for up to three nights, with the owner's permission (for example, if the person who shares your room is away for the weekend ), but you must inform Stan before your guest arrives, so that he has an exact record of who's in the building of a fire breaks out. Students are not allowed to charge each other for this. _ There is a kitchen on each floor where light meals, drinks, etc. maybe prepared. Each has a large fridge and a food cupboard. All food should be stored, clearly marked with the owner's name, in one of these two places. Bedrooms are too warm for food to be stored, and the cleaners have instructions to remove any food found in them. After using the kitchen, please be sure you do all your washing up immediately and leave it tidy. If you use it late in the evening, please also take care that you do so quietly in order to avoid disturbing people in nearby bedrooms. Which of the following is true according to the passage? A) Your insurance will cover what you have lost. B) The cleaners will take away food left in the bedrooms. C) Spare rooms are least likely to be available in summer. D) Students will be fined for lending their cards to others.
A: B
Q: Women, Race & Class Angela Y Davis PS7.99 Analysing the differences and similarities between the experiences of black and white women, Davis casts new light on the struggle for human rights. The Words to Say it (an autobiographical novel) Marie Cardinal translated by Pat Goodheart PS7.99 Marie Cardinal's groundbreaking book was the first and remains the complete book about the personal experience of psychoanalysis . It reveals her traumatic childhood and institutionalisation , followed by her escape to the cul-de-sac where her analyst lived. There, for many years, she made the journey towards recovery through Freudian psychoanalysis. A worldwide bestseller, translated into eighteen languages, it remains one of the most highly-praised books of our age. Jade Millie Murray PS4.99 Jade Wilson is smart, young, black and ambitious. And she's just been given the chance of a lifetime - a try-out for the Commonwealth Games swimming team. Jade lives with her mum, Jojo, a successful business woman. Jojo is overprotective of Jade, but she has her reasons. As a young model with a wonderful career ahead of her, she fell pregnant with Jade, and, much as she loves her daughter, she's determined not to let anything get in the way of Jade's success. So when Jade starts dating Dicey, there is hell to pay. Will Jade survive her Mum's constant nagging ? And what if she were to get pregnant - would she, could she, do the same as Jojo and give up her career? As things start hotting up with Dicey, Jade is faced with some very tough choices... . The book is very popular with people all over the world. The sentence "there is hell to pay" in the third part probably means _ . A) there are a lot of ghosts B) there is a lot of trouble C) the price has to be paid D) it cost too much to do something
A: B