DNA tells the story of the race to discover the structure of DNA, and the scientists who changed our understanding of the world and everything in it. The five-part series, to be broadcast from Thursday July 14 at 8:30 p.m. on ABC TV, also looks at the scientists' work for the future of mankind. The scientists were a small group of pioneers who explored a world too small to see. What they found there answered some eternal questions--What is life? How is it made ? Why are children like their parents? DNA is without doubt the most powerful substance on earth. The order of its chemicals determines whether a child has her mother's eyes or her father's smile. But as DNA shows, until 50 years ago, almost no one knew of its existence. All that changed when two unknown scientists - Jim Watson and Francis Crick -ran into a pub in Cambridge shouting that they'd found the secret of life. This declaration heralded a momentous discovery, not just for the human race but for the people involved. As this program shows, it was one of the most heated scientific races the world has ever seen. Dr Watson takes us back 50 years, guiding us through the tumultuous events that led to the creation of a double helix model being built by Dr Francis Crick and himself. He tells how he and Crick try hard to find the double helix first and win the Noble Prize. The program shows others involved with the DNA story, including Maurice Wilkins, who helped create the atom bomb. He became disillusioned with the science of death and chose the science of life instead, by looking for the structure of DNA. The purpose in writing this text is to _ . A) introduce some scientists B) report on a study on DNA C) tell the importance of DNA D) give a TV program summary
D
(Question)
The cost of raising a child has hit an all-time high, according to a new report, putting pressure on families already dealing with cuts to child benefit. Figures from the insurance company LV's annual Cost of a Child Report show that the cost of bringing a child up to the age of 21 has reached $222, 458 -- more than $4,000 higher than last year and up$82,000 on ten years ago. The company estimates that this is set to reach $350,000 by 2023 if costs continue to increase at the same rate. The report will be a further blow for hard-working families as cash-strapped parents continue to struggle with rising household bills, wage freezes and cuts to child benefit. The right to receive the payments, worth $20.30 a week for the first child and $13.40 further children, was removed earlier this month from households with one earner on a salary of more than $60,000 and reduced for families where one member is paid more than $50,000. The research published today shows costs have risen in all areas over the last decade, except for clothing, with education seeing the biggest increase. As a result, more than three-quarters of parents have been forced to make ends meet. According to LV, more than four in ten are reining in spending on luxuries such as holidays, a third are also cutting back how much they spend on essentials such as food. Education remains the biggest expense for parents. The cost of education, including uniforms, after school clubs and university costs, has shot up from $32,593 to $72,832 per child in the last ten years. Childcare costs have also rocketed, up from $39,613 in 2003 to $63,738 today. Which of the following is true according to the passage? A) All the extra payments for child care have been removed. B) The cost of raising a child has become a stress to most parents. C) Costs have risen in all areas in the last decade, including clothing. D) More than three quarters of parents are cutting back the costs of necessities.
(Answer)
B
Ques: Howling is a behavior commonly observed among a wolf pack . As pack animals, wolves work together to hunt and rely on howling as an important means of communication among each other. There are different explanations of a wolf's howl and it appears that there may be more to discover. One theory is that wolves howl to bond better together. It's almost as if howling together helps the pack stay together, perhaps something similar to people feeling a sense of involvement with each other when singing a song together. But this theory may be wrong, explains Fred H. Harrington, a professor who studies wolf behavior. Indeed, there have been times when wolves have been seen one moment howling in a chorus, and the next, quarreling among each other. It appears that usually the lowest-ranking members of the pack may actually be "punished" for joining in the chorus at times. So is howling a way to strengthen a social bond or just a way to reconfirm status among its members? --Why do wolves howl for sure? What is clear, however, is that howling is often used among packmates to locate each other. Hunting grounds are distant and it happens that wolves may separate from one another at times. When this happens, howling appears to be an excellent means of gathering. Howling, interestingly, is a contagious behavior. When one wolf starts to howl, very likely others will follow. This is often seen to occur in the morning, as if wolves were doing some sort of "roll call" where wolves all howl together to report their presence. What is the possible similarity between wolves' howling together and human's singing in chorus? A) The act of calling each other. B) The sense of achievement. C) The act of hunting for something. D) The sense of belonging to a group.
Ans: D
Your best friend is possibly the most important person in your life. But sometimes friendship's road is not always smooth, or it's a total dead end. What do you do when this happens? Scenario 1: Drifting Apart You've found that your friend no longer wants to jog with you. She'd rather hit the chat rooms, or she's become crazy about hanging with her new interest. It's a _ when old friends start having less in common. But it might still be worth trying to get into your friend's new interest, trying something new on your own, or meet some new folks who like doing the things you enjoy. Another thing to try is talking to your friend about it- in a non-this-is-your-fault way. The goal is telling how you feel, not "winning". Scenario 2: Fights "Yes, he is." "No, he isn't." the argument could continue forever. No matter how sure you are that you're right, friendship is based on RESPECT. Since you and your friend aren't clones , you will disagree sometimes! Is it worth fighting over? If it is trivial , why not give it up? Agree to disagree and get on well with life. Even if you'll never agree, try to see the other person's viewpoint. At least honor his right to have his own opinions. Never get physical. Violence can make a small problem into a disaster. Scenario 3: End of the Road Is the friendship over? If you are not the one ending it, it feels as if a knife cut your heart into pieces. But the thing is that you can't force someone to be your friend. Give yourself time. But don't freeze in a looking-back, holding pattern . Be open to new friendship. You never know when the "best friend forever" will come along. In the writer's opinion, showing disagreement _ . A) will surely lead to the end of a long friendship B) shows that you don't respect your friend C) is natural and normal behavior of human being D) means you have nothing in common with your friend.
C