Đọc đoạn văn sau và chọn phương án đúng (ứng vói A, B, C hoặc D) cho mỗi câu hỏi.
Scientists do not yet thoroughly understand just how the body of an individual becomes sensitive to a substance that is harmless or even wholesome, for the average person. Milk, wheat, and egg, for example, rank among the most healthful and widely used foods. Yet these foods can cause persons sensitive to them to suffer greatly. At first, the body of the individual is not harmed by coming into contact with the substance. After a varying interval of time, usually longer than a few weeks, the body becomes sensitive to it, and an allergy has begun to develop.
Sometimes it's hard to figure out if you have a food allergy, since it can show up in so many different ways. Your symptoms could be caused by marry other problems. You may have rashes, hives, joint pains mimicking arthritis, headaches, irritability, or depression. The most common food allergies are to milk, eggs, seafood, wheat, nuts, seeds, chocolate, oranges, and tomatoes. Many of these allergies will not develop if these foods are not fed to an infant until her or his intestines mature at around seven months. Breast milk also tends to be protective. Migraines can be set off by foods containing tyramine, phenathylamine, monosodium glutamate, or sodium nitrate. Common foods which contain these are chocolate aged cheeses, sour cream, red wine, pickled herring, chicken livers, avocados, ripe bananas, cured meats, many Oriental and prepared foods (read the labels!). Some people have been successul in treating their migraines with supplements of B-vitamins, particularly B6 and niacin. Children who are hyperactive may benefit from eliminating food additives, especially colorings, and foods high in salicylates from their diets. A few of these are almonds, green peppers, peaches, tea, grapes. This is the diel made popular by Benjamin Feingold, who has written the book Why your chỉld is Hyperacive. Other researchers have had mixed results when testing whether the diet is effective.
Đọc đoạn văn sau và chọn phương án đúng (ứng vói A, B, C hoặc D) cho mỗi chỗ trống từ 21 đến 30.
Honey is a sweet liquid made by trees. It (21) ______ of water and sugars. Bees may travel as (22) ______ as seventy-five thousand kilometres and visit over two million flowers to produce just half a kilo of honey. The colour and flavour of honey depend (23) ______ the type of flower visited. In (24) ______ , there are more than three hundred (25) ______ of honey. The lighter-coloured ones are generally milder in flavour than darker honey.
In ancient (26) ______ , honey was the main sweet food, as sugar was very (27) ______ . Honey was of great (28) ______ to the ancient Egyptians, who used it as payment.
Today, honey is produced and eaten in (29) ______ part of the world. Research suggests that it prevents tiredness and improves athletic performance. However, honey is not just food - it (30) ______ be taken for sure throats and is used in many skin and hair-care products.
Sử dụng từ trong ngoặc ở dạng thích hợp bằng cách chọn đáp án đúng A, B, C, hoặc D để điền vào các chỗ trống từ câu 41 đến câu 50.
Judo is a sport that has achieved great popularity in many parts of the world. It was (41. ORIGIN) _________ developed in Japan in the late 19th century based on ancient methods of self-defence. There are two (42. FIGHT) _________ Although they use physical (43. VIOLENT) _________ against each other, they are (44. RESPECT) _________ to their opponent and bow to each other before and after each contest.
Judo is an (45. EXPENSIVE) _________ sport to take up because the only equipment you need is the special loose fitting suit. It is very suitable for.(46. YOUNG) _________ if they join a club where the (47. INSTRUCT) _________ are properly qualified and pay enough attention to safety. Although Judo is a physically (48. DEMAND) _________ Sport which requires a lot of(49. STRONG) _________ , practice and skill, there are many people who find it (50. ENJOY) _________ as a means of relaxation in their spare time.
Điền từ thích hợp bằng cách chọn đáp án A, B, C hoặc D để điền vào chỗ trống trong đoạn văn từ câu 51 đến câu 60.
A pioneer in the field of telecommunications, Alexander Graham Bell was (51) _________ in 1847 in Edinburgh, Scotland. He moved to Ontario, and then to the United States, setting in Boston, before beginning his career as an inventor. Throughout his life, Bell had been interested (52) _________ the education of deaf people. This interest led him to (53) _________ the microphone and; in 1876, his “electrical speech machine,” which we now call a (54) _________ New of his invention quickly (55) _________ throughout the country, even throughout Europe. By 1878, Bell had set up the first telephone exchange in New Haven, Connecticut. By 1884, lone distance connections were (56) _________ between Boston, Massachusetts and New York City.
Bell imagined great uses for his telephone, like the model from (57) _________ 1920s, but would he ever have (58) _________ telephone lines being used to transmit video images? Since his (59) _________ in 1922, the telecommunication industry has undergone an amazing revolution. Today, non hearing people are able to use a special display telephone to communicate. Bell's “electrical speech machine” paved the way (60) _________ the information Superhighway.