Article: Do you know why different animals or pests have their special color1s? Their color1s in them seem to be used mainly to protect themselves. Some birds like eating locusts , but birds cannot easily catch them. Why? It is because locusts change their color1s together with the change of the color1s of crops . When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color1 as crops have. Some other pests with different color1s from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night. If you study the animal life, you'll find the main use of color1ing is to protect the animals themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters . This is because they have the color1s much like the trees'. Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid when it faces danger. While the liquid spreads over , its enemies cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all. Question: How can pests with different color1s from plants keep themselves out of danger? Yes or no, is the answer "They hide themselves by the day and appear at night."?
No

(Question)
Article: "How should I give my children pocket money?" is one of the most common questions asked by parents. "Should kids receive pocket money when they get high marks at school, or lose pocket money if they don't help with the housework?" are also common questions. Giving pocket money is an excellent way to develop children's independence. Children should receive pocket money as their small share of the family wealth, and they should share in doing the housework as well. Here are some ideas to help you use pocket money to develop your children's independence. Give pocket money regularly. Like adults, children should have a payday every week or two. Link pocket money with ages and needs. Provide spending guidelines; don't be afraid to let them know what you expect them to buy, and what not to. A child in preschool and lower primary school is sure to spend money on candies and other such things. But older children can be expected to buy their own lunches or bus tickets. Teach kids to set their goals. Encouraging children to save money for big things like bikes can help them learn about planning ahead. When given wisely, pocket money is an excellent way to develop children's independence. But at some time, perhaps when a child turns fifteen, it needs to be reduced or eliminated in order to encourage the child to get a part-time job and begin to earn his own pocket money. Question: When giving pocket money to children, parents should _ . Yes or no, is the answer "give it to them at regular times"?
(Answer)
No

Ques: Article: Fencing or Not Wildlife fences are constructed for a variety of reasons including to prevent the spread of diseases, to protect wildlife from poachers , and to help manage small populations of threatened species. Human-wildlife conflict is another common reason for building fences. Wildlife can damage valuable farm animals and crops. Some species carry diseases of agricultural concern, and a few threaten human lives. At the same time, people kill wild animals for food, trade, or to defend lives or property, and human activities destroy wildlife habitat . Separating people and wildlife by fencing can appear to be a _ beneficial way to avoid such harmful effects. But in a paper in the journal Science, published recently, some scientists argue that fencing should only be used if worse comes to worst. According to the scientists, although fencing can have conservation benefits, it also has costs. When areas of wildlife habitat are changed into islands, the resulting small and isolated populations tend towards extinction, and the resulting loss of larger-bodied species can affect interactions between species in ways that cause further local extinctions. Therefore, scientists are asking that conservationists carefully weigh up the biodiversity costs and benefits of new and existing fences. In addition to fences' ecosystem-wide impact, the scientists don't think they always achieve their specific aims. Construction of fences to reduce human-wildlife conflict has been successful in some places but the challenges of appropriate fence design, location, construction, and protection mean that fences often fail to deliver the anticipated benefits. In some places, fences also provide poachers with a ready supply of wire for making traps. A variety of alternative approaches, including better caring for farm animals, community-based crop-guarding, insurance and wildlife-sensitive land-use planning are suggested to reduce conflicts between people and wildlife without the need for fencing. Some projects working with local... Question: According to the scientists, what will fencing influence _ ? Yes or no, is the answer "Species diversity."?
Ans: Yes

Article: Nuclear radiation has a certain mystery, partly because it cannot be detected by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around but we can't detect them or sense them without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being outright by killing masses of cells in important organs. Even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and when they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years. This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. A child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Question: Radiation can hurt us so much that it can _ . Yes or no, is the answer "A and C"?
Yes