15000 bài tập tách từ đề thi thử môn Tiếng Anh có đáp án (Phần 29)

There has been an outbreak of avian influenza, better known as bird flu in Asia recently. The first (1) _____ died two weeks ago in Vietnam and there have been the cases reported since in Thailand, and there are some suspected cases in Cambodia as well as.

    Wild birds are affected by a large number of flu viruses, just as the humans and other animals are, but they are normally exclusive to birds. If the viruses manage to mutate, they can to jump the species barrier and infect human beings. The first case (2) _____ someone died was in Hong Kong in 1997.

    There are the several different forms of bird flu, ranging from mild to very (3) _____ infections, which spreading rapidly and kill many of the birds they infect. It is spread by wild birds-ducks, in particular – which carry the virus, but aren't killed by it. They can spread the virus to farm birds through (4) _____ contact or by the contaminating water supplies.

    World Health Organization officials have attributed the spread of bird flu to human contact with the droppings of infected birds and (5) _____ sanitation. There was no evidence at first that the virus spread from person to person, though there has been a case of this happening being investigated by scientists.

The wind controls our planet's weather and climate. But how much do we understand about this complex force (31)______ can kill and spread fear?

    On the night of October 15, 1987, the south of England was struck by strong winds. Gusts of over 130 km/h (32)______ through the region. Nineteen people were killed, £1.5-billion worth of damage was (33) ______ and 19 million trees were blown down in just a few hours.

Although people thought of this as a hurricane, the winds of 1987 were only a (34)______ 7 storm. They remain far better known than the much more serious storms of January 25, 1990, when most of Britain was hit by daytime winds of up to 173 km/h. On this occasion, 47 people were killed, even though, (35)______ in 1987, the weather forecasters issued accurate warnings.

Some time ago, scientists began experiments to find out (31)______ it would be possible to set up a “village” under the sea. A special room was built and lowered (32)______ the water of Port Sudan in the Red Sea. For 29 days, five men lived at a depth of 40 feet. At a (33)______ lower level, another two divers stayed for a week in a smaller “house”. On returning to the surface, the men said that they had experienced no difficulty in breathing and had (34)______ many interesting scientific observations. The captain of the party, Commander Cousteau, spoke of the possibility of (35)______ the seabed. He said that some permanent stations were to be set up under the sea, and some undersea farms would provide food for the growing population of the world.

Reference books are not designed to be read from the first page to the last but rather to be consulted to answer the questions and provide both general and specific pieces of information.

    One of the most (31) _____ -used reference books is a dictionary, which provides information about words. It lists meanings and spellings, tells how a word is pronounced, gives (32) _____ of how it is used, may reveal its origins and also lists synonyms and antonyms. To help you find the words faster, there are guide words at the top of each page showing the first and last words on that page - and of course it (33) _____ to know the alphabet!

    There may be numerous special sections at the back with facts about famous people and places, lists of dates and scientific names, etc. There is usually a section at the front (34) _____ how to use the dictionary, which includes the special abbreviations or signs.

    An atlas is also a reference book and it contains charts, tables and geographical facts, as well as maps. Political maps locate countries and cities, physical maps show the formation of the land with its mountains and valleys, and economic maps show industries and agriculture. To find a specific place, you need to look in the (35) _____ at the back of the atlas and the exact position on the map. There are numerous map symbols that you need to know in order to be able to read a map-almost like a special language-and these are explained at the front of the atlas.