托福考试易错题（2019/3/6）

第1题： In addition to (appropriating) the (subject matter) of mass culture, the pop art movement of the 1950's (utilized) various (technique) of mass production. A．appropriating B．subject matter C．utilized D．technique

【单选题】： A     B     C     D

第2题：Listening 3 "LinguisticsClass" {$mediaurl} Why does the student say this: A、She is disagreeing with the professor. B、She is confirming that she has understooD、 C、She is trying to impress the other students. D、She is adding information to the lecture.

【单选题】： A     B     C     D

第3题：你认为是act like other people or behave different from any other else will be sucessful.

【分析题】：

{{B}} Importance of Vitamins{{/B}}
Vitamins, which come in many different types all of which are quite diverse in chemical configuration and function, can be any of several organic substances that are separated into water-soluble and fat-soluble groups. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life and promoting growth, vitamins are differrent from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them. So critical are vitamins to a body’s essential strength and health that if they are absent from the diet or not properly absorbed by an organism, a specific deficiency disease may develop.
The term vitamin originated from "vitamine," a word first used in the early 19th century to designate a group of compounds considered vital for life (though the term "accessory food factor" sometimes is used interchangeably to refer to these substances). Like other nutrients, vitamin consumption is imperative to keep our bodies functioning properly, and if there is a lack of vitamin consumption, the body will fail to react in a way that’s considered healthy. Lack of vitaminA、will result in various disorders that most commonly involve the eye and the tissues around it. One of the earliest symptoms of vitaminA、deficiency is nyctalopia, the medical term for night blindness, which causes a visual failure to adapt quickly from light to darkness and an inability to see in the dark. This aspect of vision is normally dependent on rhodopsin, a protein found in the eye that maintains itself only in the presence of vitaminA; in the lack of vitaminA, rhodopsin will malfunction.
These earlier symptoms are quite harmless but the side effects can become increasingly serious if not treated early on. If the deficiency is severe and persists, especially in malnourished infants and children, a condition known as xerophthalmia--when the eyes are sensitive to light, the secretion of lubricating tears is stopped, and the eyelids become swollen and develop pus -- may develop. Furthermore, the mucous surfaces of the eye may become eroded, allowing infection to set in, thus leading to ulceration and other destructive changes of the cornea and other structures of the eye, resulting eventually in blindness.

Early signs of vitaminA、deficiency may also be reflected in changes in the membranes of the mouth, throat, and respiratory and genito-urinary passages where the lining membranes become malnourished and dry and lose their cilia, the tiny hairlike projections that normally help in clearing away foreign particles.
The natural immune system is weakened and if insufficient intake of vitaminA、is prolonged, the skin may become dry and rough.
VitaminA、deficiency may also result in defective bone and teeth formation and in poor general growth.

However, an excessive intake of vitaminA、can also cause severe damages to the body causing a symptom called "hypervitaminosisA", which happens when a person takes in more than 150 milligrams of vitaminA、over a long period of time; the vitamins are stored in the liver and can reach dangerous level because theA、vitamins are not employed to make the bodies stronger, but rather, stored as toxic material.Excessive amounts of vitaminA、can cause nausea, dryness of skin, blurred vision, drowsiness, and bone pain.
VitaminA、can be found in all animal livers, in milk

第4题：{{B}}Set 4{{/B}}

【单选题】： A     B     C     D

第5题：All brass instruments use a mouthpiece （） into a long cone-shaped tube.  A. is inserted  B. that inserted  C. that is inserted  D. and inserted

【单选题】： A     B     C     D