I was too scared to tell him what I really thought.
COURAGE
I ……………………………………… to tell him what I really thought.
Giải bởi Vietjack
I didn’t have the courage to tell him what I really thought.
People say that the pyramids are worth visiting.
SUPPOSED
The pyramids ……………………………………………. worth visiting.
Job specialisation takes place…………of production is seperated into occupations.
I was so shocked that I couldn’t react.
WASN’T
I …………………………………………………………… react.
Bats avoid………..objects by emitting high-frequency sounds and listening for echoes.
Read the following passage and choose the correct answer to each of the questions.
Scientists have established that influenza viruses taken from man can cause diseases in animals. In addition, man can catch the diseases from animals. In fact, a greater number of wild birds seem to carry the viruses without showing any evidence of illness. Some scientists conclude that a large family of influenza viruses may have evolved in the bird kingdom, a group that has been on earth 100 million years and is able to carry the viruses without contracting the disease. There is even convincing evidence to show that virus strain are transmitted from place to place and from continent to continent by migrating birds.
It is known that two influenza viruses can recombine when both are present in an animal at the same time. The result of such recombination is a great variety of strains containing different H and N spikes. This raises the possibility that a human influenza viruses can recombine with an influenza virus from a lower animal to produce an entirely new spike. Research is underway to determine if that is the way major new strains come into being. Another possibility is that two animal influenza strains may recombine in a pig, for example, to produce a new strain which is transmitted to man.
According to the passage, scientists have discovered that influenza viruses _______
Read the text and then select the correct answer, A, B, C or D. Write your answer in the right box below.
The Netherlands
Welcome to the Netherlands, a tiny country that only extends, at its broadest, 312 km north to south, and 264 km east to west - (1) ______ the land area increases slightly each year as a (2) ______ of continuous land reclamation and drainage. With a lot of heart and much to offer, 'Holland,' (3) ______ it is commonly known to most of us abroad - a name stemming (4) ______ its once most prominent provinces - has more going on per kilometre (5) ______ most countries, and more English-speaking natives. You'll be impressed by its (6) ______ cities and charmed by its countryside and villages, full of contrasts. From the exciting variety (7) ______ offer, you could choose a romantic canal boat tour in Amsterdam, a Royal Tour by coach in The Hague, or a hydrofoil tour around the biggest harbour in the world - Rotterdam. In season you could visit the dazzling bulb fields, enjoy a full day on a boat, or take a bike tour through the pancake-flat countryside spiced with windmills. The possibilities are (8) ______ and the nationwide tourist office, which is on hand to give you information and (9) ______ reservations. You'll have (10) ______ language problems here, as the Dutch are true linguists and English is spoken here almost universally.
Fill in each blank with a suitable word to fill in the blanks.
Vitamins are substances required for the proper functioning of the body. In this century, thirteen vitamins have been discovered .
A lack of any vitamins in a person’s body can cause illness. In some cases, an excess of vitamins can also (1)……….to illness. For example, sailors in the past were prone to suffer from scurvy (2)………is a disease resulting from the lack of vitamin C. It causes bleeding of the gum, loss of teeth and skin rashes. Sailors suffer from scurvy because they did not eat fruits and vegetables. Fruits and vegetables contain vitamin C ,which is necessary for good (3)…………..
Vitamin B complex is composed of eight different vitamins. A lack of any of these vitamins will lead to different(4)……….. For instance, a person who has too little vitamin B1 will suffer from beri-beri, a disease that causes heart problems and mental disorders. A lack of vitamin B2 results in eye and skin problems while deficiency of vitamin B6 causes problems of the nervous system. Too little vitamin B12 will cause anemia. The knowledge that vitamin deficiencies caused certain diseases led doctors to (5)………people suffering from these illnesses by giving them doses of the necessary (6)………….Today, vitamins are available (7)……….the form of pills and can easily be bought at any pharmacy.
Choose the word whose stress is pronounced differently from the other three in the following questions
