题目
题型：不详难度：来源：
It is interesting to point out that many color-blind people don’t even realize that they are color-blind, they don’t know that the colors they are seeing and naming are not the actual colors that people with normal vision can see. This can be dangerous when a color-blind person confuses the red and green of a traffic light.
Color blindness is thought to be inherited（遗传）and although doctors have tested color blindness, there is no cure to treatment for it.
小题1:There are four cards here, and each has two colors. Which card’s colors do you think a color-blind person can tell correctly?
| A．Red, Green | B．Green, Yellow | C．Red, Brown | D．Brown, Yellow |
| A．always knows how color-blind he is |
| B．often gives the wrong name of colors |
| C．see everything as the same color |
| D．can hardly see something of strong colors |
| A．it is crowded |
| B．it is a dark night |
| C．there are no traffic lights at the cross of the streets |
| D．the traffic light turns red |
| A．his old age |
| B．his poor eyesight |
| C．his parents or grandparents |
| D．his living condition |
| A．have found a way to prevent a person from getting color-blind |
| B．have found a way to free a person from his color blindness |
| C．have been able to tell whether a person is color-blind or not |
| D．have made it quite clear the cause of color blindness |
答案
小题1:D
小题2:B
小题3:D
小题4:C
小题5:C
解析
试题分析：文章介绍色盲的一些情况，色盲的人对什么样的颜色会色盲，为什么会色盲等等。
小题1:细节题：从第一段的句子：Most color-blind people can see yellows and blues, but confuse reds with green.可知色盲的人会把红色和绿色混淆，所以ABC都不对，选D
小题2:细节题：从第二段的句子：they don’t know that the colors they are seeing and naming are not the actual colors that people with normal vision can see.可知色盲的人看见的说的颜色和正常人不一样，就是错的，选 B
小题3:推理题：从第一段的句子：Most color-blind people can see yellows and blues, but confuse reds with green.可知色盲的人会把红色和绿色混淆，可推断出色盲人过马路的时候会分不清红绿灯，比较危险，选D
小题4:细节题：从第三段的句子：Color blindness is thought to be inherited（遗传）可知色盲是遗传的，所以是和父母和祖父母有关，选C
小题5:细节题：从第三段的句子：although doctors have tested color blindness, there is no cure to treatment for it.可知医生能够辨别一个人是否是色盲。选C
核心考点
试题【People who cannot tell all colors apart are said to be color-blind. Most color-b】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Aerobic Exercise: To have a strong and healthy heart, you need to do aerobic exercise. This means that you need to exercise yourself enough so that your heart rate, while exercising, is 65 percent to 85 percent of your maximum heart rate. If you don’t get your heart rate up within this level—you just aren’t working hard enough. Whatever you do, your heart rate needs to be 65 percent to 85 percent of your MHR for 20 to 30 minutes, at least 3 times a week. Typical types include:
* Running
* Walking (at least 4 to 4.5 mph)
* Swimming
* Biking
* Elliptical Training (椭圆运动)
* Yoga
Strength Training: To keep your muscles and bones strong, you need to do strength training. This comes in a variety of forms. Whatever you do, however, you need to train your muscles enough so that they are really tired by the end of each session. To see real benefits, make sure you are strength training 2 to 3 times a week for about 30 to 40 minutes. Typical types of strength training include:
* Weight Training
* Yoga
* Resistance Training
* Plyometrics（肌肉增强训练）
Flexibility Training: To keep your body flexible, reducing risk of injuries and pain in your joints and muscles, you need to do flexibility training. You should always aim to stretch every muscle after any exercise routine. Typical types of flexibility training include:
* Stretching
* Yoga
* Pilates（普拉提课程）
So next time you think that yoga 5 times a week will be enough, think about what it is really doing. Is it getting your heart rate up? Are you making up your strength? Are you keeping your muscles flexible?
小题1:If your purpose is to _______, you can choose swimming as your exercise form.
| A．build a strong and healthy heart |
| B．keep muscles and bones strong |
| C．keep body flexible |
| D．reduce risk of injuries and pain in joints and muscles |
| A．Yoga is really better for people than running |
| B．The more exercise you do, the better |
| C．Flexibility training helps you build up your muscles |
| D．The three kinds of training have links with one another |
| A．meeting | B．gathering | C．period | D．term |
| A．how to find a good workout dealing with two or three of these goals |
| B．how to choose an exercise type |
| C．how to build up our strength |
| D．how to be more flexible |
“Two full inches in the first three days!”
These are the kinds of statements used in magazine，newspaper，radio and television ads，promising new shapes and new looks to those who buy the medicine or the device. The promoters of products say they can shape the legs，slim the face，smooth wrinkles，or in some other way to add to beauty or desirability.
Often such products are nothing more than moneymaking things for their promoters. The results they produce are questionable，and some are dangerous to health.
To understand how these products can be legally promoted to the public，it is necessary to understand something of the laws covering their regulation. If the product is a drug，FDA(Food and Drug Administration)can require proof under the Food，Drug，and Cosmetic Act that is safe and effective before it is put on the market. But if the product is a device，FDA has no authority to require the proof of safety or effectiveness. If a product already on the market is a danger to health，FDA can request the producer or distributor to remove it from the market voluntarily，or it can take legal action，including seizure (查封) of the product.
One notable case a few years ago involved an electrical device called the Relaxacisor，which had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds that it was dangerous to health and life.
Obviously，most of the devices on the market have never been the subject of court proceedings (法律诉讼)，and new devices appear continually. Before buying，it is up to the consumer to judge the safety or effectiveness of such items.
小题1:It can be inferred that the ads mentioned in the text are________.
| A．objective | B．costly | C．unreliable | D．illegal |
A．The court is in charge of removing dangerous products.
B．New products are more likely to be questionable.
C．The production of a device must be approved by FDA.
D．The promoters usually just care about profits.
小题3:FDA can ask for the proof of safety and effectiveness of a product________.
| A．if it is a drug |
| B．if it is a device |
| C．if its consumers make complaints |
| D．if its distributors challenge FDA"s authority |
| A．a product which was designed to produce electricity |
| B．a product whose distributor was involved in a legal case |
| C．a successful advertisement of a beauty product |
| D．an example of a quality beauty product |
Raw and whole foods are usually digested more efficiently than cooked foods. When we cook foods, we destroy the natural enzymes (酶) that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is overweight. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive system, where it becomes increasingly acidic. To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.
Processed foods (加工食品) contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat. Processed foods also upset the digestive cycle. The body will either identify these foods as allergens and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism (新陈代谢) becomes inactive, and the result is weight gain and obesity.
The accumulation of acid in the digestive system makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common.
To stop this vicious circle in its tracks, people need to consume food and supplements that will neutralize the acid already accumulated in body. Eating the right types of raw and whole foods can help. It’s also important to restore your enzyme balance. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself, you need to take an active approach. One effective way is to choose raw and whole foods appropriately according to your health conditions and personal preferences.
小题1:It can be inferred from Para. 2 that __________.
| A．we’d better be cautious about raw and whole foods |
| B．foods with natural enzymes help people keep fit |
| C．it is important for people to protect their vital organs |
| D．giving up cooked and refined foods is a new lifestyle |
| A．destroy body’s cells | B．harm your stomach |
| C．may lead to obesity | D．stop body’s natural function |
| A．To warn people of the problem of overweight. |
| B．To inform people of the harm of processed foods. |
| C．To advocate eating more raw and whole foods. |
| D．To tell the differences between raw and processed foods. |
| A．Different causes of acid accumulation. |
| B．Correct ways to cook raw foods. |
| C．Active approaches to avoid acid. |
| D．Suitable types of raw and whole foods. |
That"s not a reference to the mystery meat served up in the cafeteria line either. The retired officers are saying that school lunches have helped make the nation"s young people so fat that fewer of them can meet the military"s physical fitness standards, and recruitment will be difficult.
A new report being released Tuesday says more than 9 million young adults, or 27 percent of all Americans ages 17 to 24, are too overweight to join the military. Now, the officers are advocating for passage of a wideranging nutrition bill that aims to make the nation"s school lunches healthier.
The military group acknowledges that other things keep young adults out of the armed services, such as a criminal record or the lack of a high school diploma. But weight problems that have worsened over the past 15 years are now the leading medical reason that recruits are rejected.
Although all branches of the military now meet or exceed recruitment goals, retired Navy Rear Adm. James Barnett Jr., a member of the officers group, says the obesity trend could affect that.
“When over a quarter of young adults are too fat to fight, we need to take notice，” Barnett said. He noted that national security in the year 2030 is “absolutely dependent” on reversing child obesity rates.
This isn"t the first time the military has gotten involved in the debate over school lunches. During World War Ⅱ， military leaders had the opposite problem, reporting that many recruits were rejected because of stunted growth and inadequate nutrition. After the war, military leaders pushed Congress to establish the national school lunch program so children would grow up healthier.
Today, the group is urging Congress to eliminate junk food and highcalorie beverages from schools, put more money into the school lunch program and develop new strategies that help children develop healthier habits.
小题1:What is the main problem of the lunches in schools according to the military officers?
| A．The meat in the lunches is mysterious. |
| B．The lunches are too expensive. |
| C．The lunches contain too much fat. |
| D．There is inadequate nutrition in the lunches. |
| A．slow in mind | B．state of being fat |
| C．quick in movement | D．lack of confidence |
| A．The lunches in American schools are not very healthy. |
| B．During World War Ⅱ，many people could not join the army because of overweight. |
| C．According to the author , overweight was the key reason why many recruits were rejected. |
| D．By now, Congress hasn"t eliminated junk food and highcalorie beverages from schools. |
| A．School lunches: a national security threat? |
| B．National security in danger ? |
| C．Retired officers tired of school lunches |
| D．The recruitment of 2030 |
The doctors reasoned that kwashiorkor was found in the young children of this age in many parts of Africa because of lack of milk or meat. Their mothers, after stopping their breastfeeding, gave them foods full of starches（淀粉）instead of greatly needed proteins. They found that the addition of milk to the food of the children suffering from kwashiorkor saved many lives.
The unbelievable thing about kwashiorkor is that the very existence of the disease—which has been killing thousands of children for centuries—was not even recognized in Latin America as recently as ten years ago. The deaths of those children were mistakenly listed as due to other diseases. It was the WHO’s work in Africa that led to the discovery of the problem in Central America.
小题1:From the passage we learn that kwashiorkor is a disease caused by __________ .
| A．poor living conditions | B．lack of proteins in food |
| C．breastfeeding | D．lack of food |
| A．it has no symptoms at all |
| B．it is hard to identify signs of it |
| C．it doesn’t last long enough for careful observation |
| D．it is hardly different from other diseases |
| A．Taking a special medicine. |
| B．Avoiding any food containing starch. |
| C．Having more meat or milk. |
| D．Taking medicine full of proteins. |
| A．Milk and Meat Are Daily Necessities |
| B．Kwashiorkor and Improper Eating Habits |
| C．A New Form of Illness in Africa and Latin America |
| D．A Case of Eating Habits |
最新试题
- 1孙中山曾说过“共产主义是三民主义的好朋友”。***在1940年的《新民主主义论》中说“三民主义为中国今日之必需，本党愿为
- 2小明在“测小车的平均速度”的实验中设计了如图所示的实验装置，小车从带刻度的斜面顶端由静止开始下滑，小车到达A、B、C三处
- 3（体验探究题）如图所示，该图中包含的平面图形有（ ）①等腰梯形；②正六边形；③四边形；④三角形（实线与虚线组成）；⑤平
- 4根据短文内容及首字母提示，填写所缺单词。(每小题1分，计10分)Kitty was a student in a sma
- 5一个质量为140g、体积为1.8×10-4m3的物体，用手将其浸没在水中时，物体受到的浮力为______N，松手后物体将
- 6新航路的开辟对欧洲的重大影响不包括( )A．欧洲与非洲、亚洲之间的贸易扩大B．主要商路从大西洋沿岸转移到地中海C．世界
- 7位于亚洲西部的人类文明发祥地是（ ）A．印度河流域B．黄河——长江中下游地区C．尼罗河三角洲D．美索不达米亚平原
- 8已知⊙O1与⊙O2外切，它们的半径分别是2和3，则圆心距O1O2的长是 [ ]A.O1O2=1 B.O1O2=5
- 9如图，AD是△ABC的角平分线，DE∥AC交AB于E，DF∥AB交AC于F．且AD交EF于O，则∠AOF=______度
- 10---- I’m taking a taxi to the airport to pick up my daughter
热门考点
- 1完成句子 (共10小题，每小题1分，满分10分) 请根据句子的意思和汉语提示完成下列句子，每空只填一个单词。小题1:A
- 2No one is allowed, no matter who he is, _____ the room unles
- 3空间存在如图所示的匀强电场E和匀强磁场B.下面关于带电粒子在其中运动情况的判断，正确的是( )A.若不计重力，粒子做
- 4如图，梯形ABCD中，AD∥BC，∠A=90°，E为CD的中点，BE=6.5，梯形ABCD的面积为30，那么AB+BC+
- 5下列叙述正确的是（ ）A．NaHCO3溶液与石灰水反应，当n（NaHCO3）：n[Ca（OH）2]=1：1时，HCO3
- 6用电烙铁对断开的线路用焊锡进行焊接，在此过程中焊锡发生的物态变化是（ ）A．熔化B．先熔化后凝固C．凝固D．先凝固后熔
- 7美国宇航局于2007年3月21日发布的由“太阳—B”观测卫星拍摄的太阳图片揭示了太阳光球和日冕之间的色球层的动态特征，太
- 8已知等比数列的各项均为正数,且，.（1）求数列的通项公式；（2）设，求数列的前项和.
- 9关于十月革命的意义的表述，错误的一项是（ ）A．是人类历史上第一次获得胜利的社会主义革命B．沉重打击了帝国主义的统治
- 10若直角坐标平面内A、B两点满足条件：①点A、B都在f（x）的图象上；②点A、B关于原点对称，则对称点对（A，B）是函数的