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1、2015 高考英语（三月）阅读类自练（高考英语（三月）阅读类自练（1）及答案（济南市）及答案（济南市）阅读下列四篇短文，从每小题后所给的 A,B,C 或 D 四个选项中，选出最佳选项。The term“multitasking” originally referred to a computers ability to carry out several tasks at one time. For many people, multitasking has become a way of life and even a key to success. In fact, some excell
2、ent mental aerobic exercises(大脑训练)involve engaging the brain in two or more challenging activities at a time. Although checking e-mail while talking on a phone and reading the newspaper may be second nature for some people, many times multitasking can make us less productive, rather than more. And s
3、tudies show that too much multitasking can lead to increased stress, anxiety and memory loss. In order to multitask, the brain uses an area known as the prefrontal cortex(前额叶脑皮层). Brain seans of volunteers performing multiple tasks together show that as they shift from task to task, this front part
4、of the brain actually takes a moment of rest between tasks. You may have experienced a prefrontal cortex“moment of rest” yourself if youve ever dialed(拨电话) a phone number and suddenly forgotten who you called when the line is answered. What probably occurred is that between the dialing and the answe
5、ring, your mind shifted to another thought or task, and then took that“moment” to come back. Research has also shown that for many volunteers, job efficiency(效率) declines while multitasking, as compared to when they perform only one task at a time. Multitasking is easiest when at least one of the ta
6、sks is habitual, or requires little thought. Most people dont find it difficult to eat and read the newspaper at the same time. However, when two or more attention-requiring tasks are attempted at one time, people sometimes make mistakes. We often dont remember things as well when were trying to man
7、age several details at the same time. Without mental focus, we may not pay enough attention to new information coming in, so it never makes it into our memory stores. That is one of the main reasons we forget peoples nameseven sometimes right after they have introduced themselves. Multitasking can a
8、lso affect our relationships. If someone checks their e-mail while on the phone with a friend, they may come off as absent-minded or disinterested. It can also cause that person to miss or overlook key information being passed on to them. 1. Why are some mental aerobic exercises designed to engage p
9、eople in multitasking? A. To make them more productive. B. To reduce their stress and anxiety.C. To develop their communication skills. D. To help them perform daily tasks more easily.2. According to Paragraph 2, why may a person suddenly forget who he has called? A. He may have his prefrontal corte
10、x temporarily damaged.B. He is probably interrupted by another task.C. He is probably not very familiar with the person he has called.D. He may need a rest between dialing and speaking.3. People tend to make mistakes when . A. they perform several challenging tasks at a timeB. new messages are proce
11、ssed one after anotherC. their relationships with others are affectedD. the tasks require little thought4. What is the main idea of the passage? A. Multitasking has become a way of life.B. Multitasking often leads to efficiency decline.C. Multitasking exercises need to be improved.D. Multitasking en
12、ables people to remember things better.【参考答案】1-4 、ABAB 阅读下列四篇短文，从每小题后所给的 A,B,C 或 D 四个选项中，选出最佳选项。Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly. The symptoms of fo
13、od poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms. Certain microorganisms(微生物) cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tin
14、y living things release(释放) poisons that make people sick. Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to
15、those chemicals when they eat the crops. Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms. When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply
16、rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contai
