I'm taking a test and have to guess the right answer to the question after the article. Article: Smoking bans in public places are linked with falls in childhood asthma attacks and preterm births , according to the biggest analysis of the influence of public smoking bans on child health. The finding should remove fears that such laws could have the opposite effect because they may lead people to smoke more at home. Several countries, such as Japan and Australia, have tightened laws on smoking in public places over the last few years. Meanwhile, some countries, such as the Netherlands and Germany, still allow smoking in pubs and restaurants. Only about half of US states have comprehensive bans, and there are few restrictions in poorer nations. Opponents often claim that bans could result in people smoking more at home, which would be worse for their children's health. Asthma is one of the main concerns as second-hand smoke harms children's airways in several ways. Researchers led by Jasper Been at Maastricht University Medical Centre reviewed as many as 11 studies that examined how hospital admissions for childhood asthma and preterm births changed after smoking bans came in. The studies involved more than 2.5 million births, and nearly 250,000 hospital admissions for asthma. The result shows that both asthma admissions and preterm birth rates fell by about 10 percent within a year after smoking restrictions were carried out. The effect on preterm births could also have been caused by pregnant women being more likely to quit or cut down following a public ban, says Been. But Been also says the studies could not completely prove that smoking bans directly caused these changes. However, as a matter of fact, because the analysis included several smoking bans introduced in different countries in different years, and most saw health improvements. Such findings are useful for countries and states where there is ongoing debate about how strict smoking bans should be, especially as hospital care for premature babies is so expensive. This might be one of the most important things to know in order to strengthen... Question: According to the passage, some oppose smoking bans in public places because . Options: A: they have much difficulty in quitting smoking B: they believe it will cause people to smoke more at home C: smoking bans contributing to health can't be proved D: the laws might cause opposite effect on smokers
B

I'm taking a test and have to guess the right answer to the question after the article. Article: Gauri Nanda sees a wearable computer as a handbag -- one that's built out of four-inch squares and triangles of fiber, with tiny computer chips embedded in it. It looks, feels and weighs like your typical leather purse. That's where similarities end: This bag can wirelessly keep track of your belongings and remind you, just as you're about to leave the house, to take your wallet. It can review the weather report and suggest that you grab an umbrella. This purse can even upload your favorite songs onto your scarf. Sure, a computing purse and scarf set may seem like the stuff of science fiction. But these devices, part of next generation of wearable computers, could become commonplace within a few years. DuPont created new super strong fibers that can conduct electricity and can be woven into ordinary-looking clothes. And the chipmaker developed chip packaging allowing wearable computers to be washed, even in the heavy-duty cycle. As a result, these new wearable devices are different from the heavy and downright silly versions of the recent past, which often required users to be wrapped in wires and type on their stomachs. Unlike their predecessors, these new wearable computers also make economic sense. When her bag becomes commercially available in two to three years, Nanda expects it will cost around $150, which is the price of an average leather purse. Here's how the bag works: You place a special radio-signal-transmitting chip on to your wallet. A similar radio in your purse picks up the signal and notifies you that you've forgotten to take your wallet. In turn, sensors on your purse's handles will notify the computer that you've picked up the purse and are ready to go. _ Indeed, more people will want to cross that bridge in the coming years -- making for a booming market for wearable computers that don't like something out of science fiction. Question: The purpose of the passage is _ . Options: A: to introduce a new kind of computer B: to explain the function of computers C: to compare different types of computers D: to show how high technology affects our life
A

I'm taking a test and have to guess the right answer to the question after the article. Article: If your preschoolers turn up their noses at carrots or celery, a small reward like a sticker for taking even a taste may help get them to eat previously disliked foods, a UK study said. Though it might seem obvious that a reward could encourage young children to eat their vegetables, the idea is actually controversial, researchers wrote in the American Journal of Clinical Nutrition. That's because some studies have shown that rewards can _ and cause children to lose interest in foods they already liked, said Jane Wardle, a researcher at University College London who worked on the study. Verbal praise, such as "Brilliant! You're a great vegetable taster," did not work as well. The study found t hat when parents gave their small children a sticker each time they took a "tiny taste" of a disliked vegetable, it gradually changed their attitudes. The children were also willing to eat more of the vegetables-either carrots, celery, cucumber, red pepper, cabbage or sugar snap peas-in laboratory taste tests, the study said. Researchers randomly assigned 173 families to one of these groups. In one, parents used stickers to reward their children each time they took a tiny sample of a disliked vegetable. A second group of parents used verbal praise. The third group, where parents used no special vegetable-promoting methods, served as a "control". Parents in the reward groups offered their children a taste of the "target" vegetable every day of 12 days, Soon after, children in the sticker group were giving higher ratings to the vegetables-and were willing to eat more in the research lab, going from an average of 5 grams at the start to about 10 grams after the 12-day experience. The turnaround also seemed to last, with preschoolers in the sticker group still willing to eat more of the once disliked vegetable three months later. Why didn't the verbal praise work? Wardle said the parents' words may have seemed "insincere" to their children. Question: According to the passage, which of the following statements is true? Options: A: Most children are born to dislike carrots or celery. B: It remains a question whether rewarding is a good way to get children to eat vegetables. C: Oral praise wokrs quite well in encouraging children to eat vegetables. D: Children in the sticker group will never lose interest in eating vegetables.
B