I'm taking a test and have to guess the right answer to the question after the article. Article: People who are worried about bad breath often reach for a toothbrush or a gun. But in the future, personal breath monitoring may include far more than fresh breath. In face, breath is so rich in chemical compounds that fully understanding it has proved challenging. Each breath contains gases like carbon dioxide, the volatile remains of recent snacks, medicines and even compounds taken in from things like carpeting or various kinds of air pollution. But breath detectors can sort out these substances with increasing sensitivity . Scientists are building electronic sniffers that examine the exhaled air for signs of cancer, asthma , and other diseases. "There are clear signatures in the breath for liver disease, kidney disease and heart disease. Breath is a rich mixture that can reflect out state of health and disease." said Dr. Raed Dweik, director of the Cleveland Clinic, adding "Breath analysis is the future of medical testing." He and his partners are testing a desktop system called BreathLink for use in rapid identification of diseases. The system is designed to work wherever there is an Internet connection. To use BreathLink, a person breathes into a long tube, and a breath sample is collected and analyzed within the system. Then it can detail chemical concentrations of the breath in graphics. Dr. Raed Dweik said, "If you examine patients of asthma, you will find they have higher levels of nitric oxide in their exhaled air. It reflects their abnormal symptoms in the lungs." His tests have reached 85 percent accuracy so far in spotting people with some illness. But some trained dogs, he pointed out, can sniff out cancer with 99 percent accuracy--although without the ability to identify particular compounds the way some detectors can. "We are getting better and better," he said. "But whether we will ever approach the accuracy of the dog--we don't know." Question: It can be inferred that _ Options: A: brushing teeth can improve one's bad breath B: there are leftovers like snacks and medicines in one's breath C: one can know exactly about his physical state through the breath D: breath analysis can be helpful in medical diagnosis
D
(Question)
I'm taking a test and have to guess the right answer to the question after the article. Article: "We leave at dawn and head out overland by jeep towards Base One. We will get as far as we can before proceeding on foot," Mark explained. The others sat and listened. Sarah, particularly, as a "casualty of events", wouldn't have known what to say or suggest even if she'd been asked. But Harry had a lot to say. "We'll never make it," he protested . "We'll still be crossing the desert when they catch up with us. They'll know where we're heading for and they seem to know every move we make or are going to make." Mark said nothing, but spread his hands out as if to say "Well, what do we do then?" "We wouldn't be in this mess now," Harry went on, almost ignoring Mark's gesture, "if we hadn't stopped to rescue Sarah."( He glanced at her briefly.) "But since we did, we must get on--but not across the desert. There is the sand, and deep ravines which are almost invisible until you're right on them and then the heat. You have to be used to going out there, and none of us is. This is no 'morning at leisure' on some pleasant holiday, you know! If we went north instead and made for the river,..." He broke off and looked around at the others, feeling somehow that his argument was pointless. No one said anything. "Good," said Mark, look around with authority, and returned to checking their stores. A beautiful sunrise was about to burst over the horizon as the jeep headed out towards Base One. Question: Why did Harry think that they should make for the river? Options: A: The journey would be more pleasant. B: A river trip would be much safer. C: The desert heat would kill them. D: He knew the road leading north.
(Answer)
C
Question: I'm taking a test and have to guess the right answer to the question after the article. Article: Easter is still a great day for worship, randy in baskets and running around the yard finding eggs, but every year it gets quite a bit worse for bunnies. And no, not because the kids like to pull their ears. The _ is climate change, and some researchers found that rising temperatures arc having harmful effects on at least five species of rabbit in the US. Take the Lower Keys March rabbit, for instance. An endangered species that lives in the Lower Florida Keys, this species of cottontail is a great swimmer -- it lives on the islands! -- but it is already severely affected by development and now by rising levels. According to the Center for Biological Diversity, an ocean level rise of only 0. 6 meters will send these guys jumping to higher ground and a 0.9-meter rise would wipe out their habitat completely. The snowshoe hare, on the other hand, has a color issue. Most of these rabbits change their fur color from white in the wintertime to brown in the summer, each designed to give them better cover from predators . As the number of days with snow decreases all across the country, however, more and more bunnies arc being left in white fur during brown dirt days of both fall and spring, making them an easier mark for predators. Researchers know that the color change is controlled by the number of hours of sunlight, but whether the rabbit will be able to adapt quick enough to survive is a big question. The National Wildlife Federation has reported that hunters have noticed their numbers are already markedly down. American pikas or rock rabbits, a relative of rabbits and hares, might be the firs' of these species to go extinct due to climate change. About 7-8 inches long, pikas live high in the cool, damp mountains west of the Rocky Mountains. As global temperatures rise, they would naturally migrate to higher ground -- but they already occupy the mountaintops. They can't go any higher. The National Wildlife Federation reports that they might not be able to stand the new temperatures as their habitat beats... Question: The problem faced by volcano rabbets and rock rabbits is that _ . Options: A: both are affected by 1ess snow B: both are affected by rising sea levels C: neither can find enough food D: neither can migrate to higher places
Answer:
D