Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
When falling to the Earth, some of the water runs into rivers, lakes and streams and becomes surface water. Some enters the ground and forms underground rivers or lakes.
![](https://rs.olm.vn/images/avt/0.png?1311)
1.on
2.cover
3.the
4.in
5.moving
6.for
7.have
8.describle
9.is
10 .and
I fill in the blank of the following passage with one suitable word.Write your answer on your answer sheet
there is much more water than land..ON.......the surface of the earth .The sea and oceans.....COVER....nearly four-fifths of the whole world , and only one-fifths of the whole world and only one fifth of....THE....... land. If you traveled over the earth .....IN....different directions you would have to spend much more of your time.......MOVING.....on water than on roads or railways .We sometimes forget that......FOR....every mile of land there is four miles of water
there is much water on the surface of our earth that we ..HAVE.......to use two words to describe. We use the word seas to...DESCRIBE..... those parts of water surface which...IS........ only a few hundreds of milea wide the word oceans to describe the huge ares of water which are thousands of miles wide.....AND.....very deep
![](https://rs.olm.vn/images/avt/0.png?1311)
II. Fill in the blank of the following passage with ONE suitable word. Write your answer on your answer sheet.
There is much more water than land (1)____on_______ the surface of the earth. The sea and oceans (2)_____are________ nearly four-fifths of the whole world, and only one-fifth of (3)___surface _______ land. If you traveled over the earth (4)____in_____different directions, you would have to spend much more of your time (5)______travelling__________ on water than on roads or railways. We sometimes forget that (6)______each_________ every mile of land there is four miles of water.
There is much water on the surface of our earth that we (7)______have________ to use two words to describe. We use the word seas to (8)____describle __________ those parts of water surface which (9)_______are _______ only a few hundreds of miles wide, the word oceans to describe the huge areas of water which are thousands of miles wide (10)_____and_____ very deep.
III. Read the following passage carefully and choose the best answer to each question. Identify your answer by writing the corresponding letter A, B, C or D on your answer sheet.
One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial effluent which pours into the lake everyday. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.
Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.
1. According to the writer, one environmental problem in the world today is ________ .
A. acid rain B. industrial pollution. C. safe water shortage. D. population explosion .
2. Many sources of water are not drinkable because of _______ .
A. acid rain. B. industrial pollution. C. garbage D. all A, B, C, are correct
3. What is serious problem of Lake Baikal in Russia?
A. It contains a rich variety of animals and plants.
B. It is polluted by massive volumes of industrial wastes discharged into it .
C. It has 1,300 rare species that do not exist anywhere else in the world .
D. The government did not have the power to enforce laws and regulations.
4. How many countries throw industrial waste into the Mediterranean Sea regularly?
A. nearly 16 B. exactly 16. C. exactly 15 D. less than 15.
5. What is the message to the reader?
A. We should take action to protect our water resources.
B. We should take all water resources into account.
C. We should limit the use of water resources.
D. We should encourage people to use safe water.
![](https://rs.olm.vn/images/avt/0.png?1311)
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 >
![](https://rs.olm.vn/images/avt/0.png?1311)
Water pollution is a major global problem which requires ongoing evaluation and
revision of water resource policy at all levels. It has been suggested that water
pollution is the leading worldwide cause of deaths and diseases, and that it accounts
for the deaths of more than 14,000 people daily. An estimated 580 people in India
die of water pollution related illness every day. About 90 percent of the water in the
cities of China is polluted. As of 2007, half a billion Chinese had no access to safe
drinking water. In addition to the acute problems of water pollution in developing
countries, developed countries also continue to struggle with pollution problems. For
example, in the most recent national report on water quality in the United States, 44
percent of assessed stream miles, 64 percent of assessed lake acres, and 30
percent of assessed bays and estuarine square miles were classified as polluted.
The head of China’s national development agency said in 2007 that one quarter the
length of China’s seven main rivers were so poisoned the water harmed the skin.
Water is typically referred to as polluted when it is impaired by anthropogenic
contaminants and either does not support a human use, such as drinking water, or
undergoes a marked shift in its ability to support its constituent biotic communities,
such as fish. Natural phenomena such as volcanoes, algae blooms, storms, and
earthquakes also cause major changes in water quality and the ecological status of
water.
1. What is the leading worldwide cause of deaths and diseases?
Water pollution is the leading worldwide cause of deaths and diseases.
2. How many people die every day by water pollution?
More than 14,000 people die every day by water pollution.
3. How many percent of the water in the cities of China is polluted?
25% of the water in the cities of China is polluted.
5. What phenomena cause major changes in water quality and the ecological status
of water?
Volcanoes, algae blooms, storms, and earthquakes.
![](https://rs.olm.vn/images/avt/0.png?1311)
Read the passage and do the tasks that follow:
AMAZING NEW INVENTIONS
Every year, more and more amazing things are invented. Here are three of our favourites for this year.
A. Fukuda’s Automatic Door
Can you imagine a door that fits around your body as you walk through it? Fukuda’s Automatic Door was designed in Japan by an inventor named Rikiya Fukuda. It automatically indentifies movement and only opens just enough to match the shape of the person or object coming through. So, what are the advantages? It saves energy by helping to keep the same temperature in a room. It can also prevent dirt and other materials from being carried inside. As well as people, the Automatic Door works for small objects, like packages delivered to a post office, or for larger things, such as a car coming through a garage door.
=>c. It’s a device that knows when you are coming.
B. The Hand Roll Piano
Traveling musicians will be happy with this invention. The Hand Roll Piano was invented by the Japanese company Yamano Music. What makes it different is that it can be rolled up like a blanket. This makes it easier to carry and easier to store. The keyboard is 100 cm long but weighs just 1 kg. It has 61 very thin keys and is made of rubber. It’s convenient to carry, but it’s also a great instrument. The piano can be played for up to 15 hours on standard batteries. It has more than 100 sounds and its own speaker.
=> d. It makes entertaining easier.
C. The LifeStraw
Today, more than one billion people in the world do not have safe water. However, it’s been discovered that for the price of a cup of coffee, a life can be saved. The LifeStraw, which costs just $3, is a device for purifying water. It is able to turn dirty water into drinking water. The drinking straw was designed by the Swiss-based company Vestergaard Frandsen. It uses seven types of filter to make water clean enough to drink. It can prevent illnesses and it can also create safe drinking water for victims of hurricanes, earthquakes or other disasters.
=> a. It’s an invention that saves lives.
1. evaporates
2. condenses
3. precipitation
4. vapour
5. surface
6. solid
7. liquid