Read the following article and select the best answer. Article: It's the dieting fashion that is sweeping the world, and encourages fasting for two days of the week. But does it work? People are starving themselves to lose weight, with a dieting trend known as the "fast diet" growing in popularity. The method is also known as the 5:2 diet, and consists of eating normally for five days of a week and cutting calories to about 25 percent of normal intake during other two days. Men consume just 600 calories on the two fast days, while women are limited to 500 calories. Notably, the two fasting days should not be _ . The dieter should have at least one normal eating day in between. In the best-selling book The Fast Diet: Lose Weight, Stay Healthy, and Live Longer with the Simple Secret of Intermittent Fasting by Dr. Michael Mosley and Mimi Spencer, the two authors claim that the 5:2 diet not only promotes weight loss, but also benefits health, offering protection from disease, improved cognitive function and increased lifespan. The diet originated in the United Kingdom and became popular in the United States. Now, it is gaining popularity among the Chinese middle-class. Zhong Minghui, who is 178 cm tall and used to weigh 100 kilograms, finds fasting effective in weight control. He works in the sales department of a trade company and used to drink and eat a lot after work. After sticking to the fasting diet for five months, he managed to lose about 20 kilograms. "Actually I did not exactly rely on the 5:2 diet to lose weight. My fasting was more extreme. I almost completely cut off my supper every day and only ate some fruit. I also used an app to calculate the calories in the food I ate and was cautious of not eating any high-calorie food. I did about an hour's aerobic exercise every day. Fasting is definitely effective, but I think sports also help," he says. "I do not really believe that fasting is the magical cure-all , but my high blood sugar has improved," he adds. The US Academy of Nutrition and Dietetics says that although there is evidence that intermittent... Question: Which is the best title of the passage? - Fast diet - How to stay thin - Eating to stay healthy - The magical cure-all
Fast diet

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Read the following article and select the best answer. Article: It takes two to duet , and one question for scientists is how these coordinated performances arise -- in birds. Are they the result of cooperation, a way in which one pair signals to others that they've got it together? Or are they the result of conflict, evolving to avoid one partner's song interfering with the other's? A study of duetting in Peruvian warbling antbirds suggests that it might be a little of both, and that context is everything. Joseph A. Tobias and Nathalie Seddon of the University of Oxford show in Current Biology that sexual conflict can cause the female of a pair that normally cooperates to "jam" the male's song by singing over it. The researchers exposed antbird pairs to recorded songs of other antbirds and monitored the songs the pairs produced. In one experiment, they played the songs of an intruding pair. In this case, the resident pair "both are likely to lose their territory, so both should cooperate," Dr. Tobias said. And they do. They produce a coordinated duet that in effect tells the intruders to keep away. But when the researchers played the song of a single female, the pair behaved differently. "You'd expect the resident female to be highly motivated to defend her position in the partnership," Dr. Tobias said. And that's what occurs. The male sings its heart out, flirting with the single female, and the female of the pair does its best to interfere with the song by singing over it, apparently to make her mate less attractive to the other female. "It's clear that the male doesn't like what she's doing," Dr. Tobias said. The behavior "breaks up what is otherwise a very cooperative situation into a more complicated signal," he added. It's the first evidence of this kind of signal jamming among pairs, Dr. Tobias said. And in that it leads the male to alter its song to avoid the female's interfering notes, it shows that this kind of conflict could, over a long period, drive the evolution of coordinated song. Question: How did the researchers conduct the experiment? - They put the antbird pairs back to nature and observe them. - They played different recorded songs of other antbirds. - They put an antbird to the other's territory and observed. - They played the songs of an intruding pair.
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They played different recorded songs of other antbirds.

Ques:Read the following article and select the best answer. Article: Earning a black belt in martial arts and being issued a pilot's license are both impressive accomplishments that take year of effort to achieve, but 30-year-old Jessica Cox has done both despite being born without arms. In spite of all difficulties , but with strong faith and the help of her family ,Cox put herself through high school and then college, typing papers with her toes, She became the first armless black belt in American Taekwondo Association and now has two black belts, She got her driver's license and then, astonishingly, her pilot's license in 2008, The achievement earned her a place in the Guinness Would Records, which recognized her for becoming the first person without arms to fly an airplane. Now Cox is the subject of a new documentary, Rightfooted, Which Cox says the hopes will inspire disabled young people around the world, "Had I watched a film similar to this one earlier, in my life ,I know it would have make a difference." Cox says in a trailer for the documentary. The young woman says her current goal is to become a motivational speaker, particularly for chileren born without arms , She says she believes her message can reach millions of people working to overcome a variety of disabilities. As the next step, she has been invited by non-governmental organization Handicap International to work with disabled children in Ethiopia Cox is extremely excited for the opportunity, She hopes that sharing her story will inspire children with disabilities and encourage Ethiopians to include all children in school because in Ethiopia only one percent of children with disabilities are educated and their parents do not think they can benefit from going to school, She also hopes to meet with government officials to inspire change. Question: What is true of Jessica Cox? - She is the first woman pilot - She is a disabled Taekwondo champion - She is the director of a documentary - She is an armless woman with strong faith

Ans:
She is an armless woman with strong faith