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IV. In the following text, six sentences or parts of sentences have been removed. Above
the extract you will find the six removed sentences PLUS one sentence which doesn't fit.
Choose from the sentences (A-G) the one which fits each gap (1-6). Remember, there is
one extra sentence you do not need to use. Write the correct letter in the box.
Choose from the following sentences to fill the spaces in the text. There is ONE extra.
A. Using a microwave for cooking a large food mass is difficult due to limited penetration of
microwaves.
B. This can be overcome by leaving the food to stand for a few minutes when cooking is
completed.
C. It is advised that the water should be poured slowly into another container that already
contains the powder.
D. In this way, buying a microwave oven with a turntable ensure the food is cooked
throughout.
E. Conversely the microwaves do not heat glass, ceramic and plastic containers.
F. If the microwaves are not absorbed inside the oven, the oven can be damaged by
electrical arcs and overheating of the microwave source.
G. When water in that state is disturbed, it can suddenly and unexpectedly boil violently.
MICROWAVING
Microwaving is a method of cooking where food is bombarded by microwaves, usually
within an appliance called a microwave oven which excite the water, fat and sugar
molecules, thereby heating (cooking) both the outside and center of the food at the same
time. (1)………E…………
(A common myth is that a microwave oven cooks from the center of the food outward. This
appears to happen because heat generated at the surface escapes more readily from the
surface of the food into the surrounding air.) One advantage of microwaving is that small
amounts of food can be heated very quickly, making it useful for reheating leftovers.
The disadvantage is that food which is microwaved does not undergo some of the chemical
reactions, such as browning, which makes the food visually attractive. Primitive microwave
ovens often do not cook evenly, leading to a concern that bacteria easily killed by more
traditional cooking methods may survive the quick cooking time in "cold spots", though the
food item as a whole is cooked to a safe average temperature. (2) …B…
Some high-end microwave ovens are combined with a convection oven which basically
cook the food using microwave and hot air simultaneously to achieve both the fast cooking
time and browning effect.
(3) ………A…………
However microwave ovens are used in some fast food chains and special microwave bags
are available for cooking fowl or large joints of meat.
Professional chefs generally recommend using microwaves for a limited set of tasks,
including: melting fats (such as butter) and chocolate, cooking grains like oatmeal and grits,
cooking rice, thawing frozen meats and vegetables before cooking by other methods and
quickly reheating already-cooked foods.
Using a microwave to boil water is potentially dangerous, due to superheating. In a
microwave, water can be raised quickly to a temperature above the boiling point before
major bubbles form, especially if it is purified and in a very clean glass vessel. (4)
………G…………
This effect is rare, even for scientists who try to deliberately recreate it, and any seed
whatsoever for boiling is likely to prevent the problem. Boiling water with, for instance, a
teabag already in it will prevent any dangers by providing a seed, as will using a mug that is
not perfectly clean.
The risk greatly increases when water has already been boiled once in the same container.
This situation can occur if the user of the oven boiled the water once, forgot about it, then
came back later to boil it again. The first time the water boils, the seed bubbles
(microscopic bubbles of air around which larger steam bubbles grow) are used up and
largely eliminated from the water as it cools down. When the water is heated again, the lack
of seed bubbles causes superheating, and a risk of a steam explosion when the water's
surface is disturbed.
Placing something in the water before heating can mostly alleviate this risk. If you are
planning to mix something with the water, say tea or hot chocolate, adding it before heating
will insure that the water boils. Otherwise, placing a wood object, for instance a chopstick,
in the water before heating will also work.
Care should be taken when removing heated water from a microwave. Make sure that the
hands are protected from possible liquid boil-over, place the container on a level, heat-
proof surface and stir liquid with a warm spoon. Also, never add powdered substances
(such as instant coffee or cocoa mix) to the container taken from the microwave, due to the
addition of all those seed bubbles and the potential for violent, spontaneous boiling. (5)
…………C………
Metal objects, such as metal utensils, in a microwave oven can lead to dangerous situations.
Metals do not absorb microwaves effectively. Instead, metals reflect microwaves, thereby
preventing the latter from reaching the food. (6) …………F………
Thin metal layers, such as metal foil and mugs with metal trim can melt or burn due to the
strong electrical currents that are generated in metal objects. However, small solid metal
objects, such as spoons, in combination with a large amount of absorbing food or liquid,
normally do not lead to problems.
This article is licensed under the GNU Free Documentation License. It uses material from the
Original Wikipedia article.
Nguyễn Bích Ngọc ngô mai phương một tip nhỏ cho 2 e khi làm bài này đúng ra là nên đọc hết cả bài nhưng mà cj thấy bài này sử dụng từ vựng khá là đơn giản thôi nên chỉ cần đọc câu trước và câu phía sau câu chỗ cần điền các e có thể đoán ra phần nào cho chắc ăn các e có thể đọc lại đoạn đó sau khi chọn. < chỉ bài này thôi là đọc câu trước và câu sau là tìm dduocj thôi chứ cj ko chắc là bài nào cũng vậy nah >
Fill in each blank with one suitable word
Is Photography Dead ?
For a long time in the past photography was not regarded as an art . It was simply a skill ans it was criized for being too mechanical and not creative enough . At last , however , photography is now accepted as a unique and very important ..(1)form of art .
The photograph's claim to be an ojective record of reality is now serious challenged and the inportant function of photography in modern - day society is consequently under threat. The threat has suddenly become all the more serious as more as and more photographers are turning to the new technology which computer offer . Moreover , a (n) increasing number of colleges have now gegun to offer courses in computer imaging . All these developments raise a disturbing question . Is photography , as we know it dead ?
In spite of its computer transformation by newtechnological developments , however , photography will continue to play a ........(8)key role in uor culture . Although it may no longer claim to be realis , modern photography can continue to provide us with fresh visual information about ourselves and the word in which we live.
Fill in each blank with one suitable word
Is Photography Dead ?
For a long time in the past photography was not regarded as an art . It was simply a skill ans it was criized for being too mechanical and not creative enough . At last , however , photography is now accepted as a unique and very important ..(1)form of art .
The photograph's claim to be an ojective record of reality is now serious challenged and the inportant function of photography in modern - day society is consequently under threat. The threat has suddenly become all the more serious as more as and more photographers are turning to the new technology which computer offer . Moreover , a (n) increasing number of colleges have now gegun to offer courses in computer imaging . All these developments raise a disturbing question . Is photography , as we know really dead ?
In spite of its computer transformation by newtechnological developments , however , photography will continue to play a ........(8)key/vital/crucial role in uor culture . Although it may no longer claim to be realis , modern photography can continue to provide us with fresh visual information about ourselves and the word in which we live.
1. Pollution is caused from the following sources except .
A. water in rivers B. water from households
C.wastes D. house chemicals
2. Recycling can help us .
A. never cut down trees B. produce more paper products
C.place garbage bins easily D. use products again and again
3. In order to save water, we can do all of the following things except .
A. fully use the washing machine
B.repair leaky faucets
C. take short showers instead of baths
D.turn the faucet off while brushing your teeth
4. Recycling helps to reduce waste because .
A. plants need to develop
B.waste can be recycled and reused
C.a person can do it in his home
D.an average man produces compost for plants
5. The word “It” in paragraph 2 refers to .
A. cutting down B. the number
C. recycling D. effort
Question 1. Choose ONE appropriate question in the box to each paragraph below:
1/ How do industry and transport cause pollution?
2/ How can I help?
3/ What is the pollution?
4/ How can industry help?
5/ What cause pollution?
6/ What about air pollution?
A. _3__ Pollution is the poisoning of the land, sea and air.
B. __5_ Mainly industry and transport. If you go to any city, you will see too many
factories, too many cars with not enough people in them, and not enough public transport.
C. __1_ Factories and vehicles produce waste which goes into the air and rivers and
spreads all over the land. Poisons in the waste build up over the years and harm trees,
plants, animals, and people.
D. _6__ Waste gases build up in the air, and dissolve into raindrops, forming a weak
acid. This "acid rain" can fall far away from the country which produced it, killing trees in
forests and fish in lakes and rivers.
E. _4__ If companies clean their waste gases before releasing them into the
atmosphere, there'll be much less air pollution and no acid rain. But this can be expensive
and it needs all the world's companies to do it.
F. _2__ Cars pollute the atmosphere. Walk, cycle and use public transport as much as
possible. Only use your car when you really need to, and use unleaded petrol if you can -
lead is one of the most dangerous ingredients in petrol. Join us, and help us to campaign for
cleaner air for everybody.
Perhaps the most useful (use) an convenient of all domestic appliances in the microwave oven. You do not need to be a skillfull (skill) cook or a technologic (technology) geniusto operate one, and you can produce extremely tasty (taste) meals at the touch of a button. Many of us would now feel rather helpful (help) and unable to cope without one. The man we have to thank for this modern cooking miracle is (invite), Percy LeBaron Spencer, who manufactured the Radar Range oven for industrial use in 1945. Ten years later (late) the first domestic microwave made its appearance (appear). This rather bulky contraption needed an electrician (electric) and a plumber to install it and was the same size as a fridge. At over $1,000 in 1955, it was not immediately successful (succeed). Not until 1967, when the countertop model became widely (wide) available, did sales start to improve.