# Multiple Choice Multiple answer PTE questions 18
Read the text and answer the multiple choice question by selecting the correct response. More than one answer is correct.
1.) Exposure to high levels of noise can cause permanent hearing loss. Neither surgery nor a hearing aid can help correct this type of hearing loss. Short-term exposure to loud noise can also cause a temporary change in hearing (your ears may feel stuffed up) or a ringing in your ears (tinnitus). These short-term problems may go away within a few minutes or hours after leaving the noise. However, repeated exposures to loud noise can lead to permanent tinnitus and/or hearing loss.
Loud noise can create physical and psychological stress, reduce productivity, interfere with communication and concentration, and contribute to workplace accidents and injuries by making it difficult to hear warning signals. The effects of noise-induced hearing loss can be profound, limiting your ability to hear high-frequency sounds, understand speech, and seriously impairing your ability to communicate.
When sound waves enter the outer ear, the vibrations impact the eardrum and are transmitted to the middle and inner ear. In the middle ear, three small bones called the malleus (or hammer), the incus (or anvil), and the stapes (or stirrup) amplify and transmit the vibrations generated by the sound to the inner ear. The inner ear contains a snail-like structure called Cochlea which is filled with fluid and lined with cells with very fine hairs. These microscopic hairs move with the vibrations and convert the sound waves into nerve impulses-the result is the sounds we hear. Exposure to loud noise can destroy these hair cells and cause hearing loss!
a. Even after long exposure, the sound is unlikely to cause hearing loss.
b. The cochlea is responsible for the transfer of sound waves into nerve impulses.
c. Exposure to noise at work can harm the worker’s health.
d. Three small bones of the outer ear- malleus, incus, and stapes are attached like a chain to the tympanic membrane and convert sound waves.
2.) Forces other than damaging winds are also at work inside tornadoes. Sometimes, as the writing, twisting funnel passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.
The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house, the air pressure is normal, about 15 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57,600 pounds. The pressure on the four walls adds up to 172,800 pounds.
If windows are open in the building, some of the inside air will rush out through them. This will balance the pressure inside and outside the building. But if the windows are shut tightly, the enormous inside pressure may cause the building to burst.
Unfortunately, heavy rain and hail often occur in thunderstorms that later produce tornadoes. So people frequently shut all windows to protect their property. This may cause far worse damage later. For the same reason, tornado cellars must have an air vent. Otherwise, the cellar door might be blown out when a tornado passes over it.
Question: Which of the following statements can be supported by the information given in the passage?
a. The difference per square inch between the air pressure inside a building and the air pressure inside a tornado is of 2 pounds.
b. According to the passage, Tornadoes can destroy a building because of the air pressure inside the tornado is less than the air pressure inside the building.
c. The pressure on a building during a tornado can be relieved by closing the cellar.
d. The passage talks about how tornadoes can be prevented.
3.) In Asia and much of the Third World, trees are still destroyed in an old-fashioned way: they are cut down for fuel and cropland. In Europe, there is a new and potentially more deadly culprit. The German call it ‘Waldsterben’, the dying forest syndrome. But the disease is far more than a German phenomenon. Since it was first observed by German scientists in the autumn of 1980, the mysterious malady has raced across Europe, blighting woods in countries as far apart as Sweden and Italy.
Explanations for the epidemic range from a cyclic change in the environment to a baffling form of tree cancer. But the most convincing evidence points to air pollution. Indeed, saving the rapidly deteriorating forests of Europe will probably require a two-pronged strategy: an offensive campaign that includes the breeding of pollution-immune trees and a defensive scheme that calls for reductions in toxic emissions. But both will require more money than is currently being spent on such measures, as well as a total commitment to protecting the environment.
Question: Why do you think the narrator calls the reasons for cutting the trees in the third world countries, ‘old fashioned’?
a. As the countries he is referring to are known as the third world, or under-developed countries.
b. Since science has made available modern and much-developed methods to satisfy these requirements.
c. As the reasons for which the trees are cut are no longer valid in today’s scenario.
d. It is a biased comment on the part of the narrator as it seems he belongs to a highly developed nation or society.
e. As there are modern solutions for the requirement of fuel and cropland available to us now.
4.) A rain forest is a thick jungle which gets an unusually large amount of rain. Rainforests cover about 6% of the earth’s surface. They hold about one-half of the world’s plant and animal types. The four layers of rain forest are the emergent layer, canopy layer, understory layer, and forest floor.
The emergent layer is made up of very tall trees up to 200 feet high. They are usually evergreens. There is good sunlight there. The canopy layer forms a roof over the 2 remaining layers. Animals like snakes, toucans, and tree frogs live in this layer. Not much sun reaches the next layer, the understory layer. Plants then have to grow larger leaves to try to reach the sun. Jaguars, leopards and many insects live here. The final layer, the forest floor, has almost no plants. Many leaves decay quickly there due to the darkness. Giant anteaters live in this layer.
Rainforests are found in five major areas of the world. Central America is famous for its brightly colored birds. The Amazon jungle in South America is the world’s largest rain forest. It has the greatest variety of plants and animals of any other place on earth. Central Africa contains the world’s second largest rainforest. The rainforests of Asia stretching from India in the west to the islands of Java and Borneo in the Pacific Ocean in the east. Australia’s rainforests are very dense and lush.
The plants that live in rainforests provide shelter and food for the animals. They also participate in gas exchanges and provide much of the world’s oxygen supply. Plants compete for sunlight on the ground so some plants live on the branches of other plants. Aerial plants can get food from the air itself using air roots.
Some interesting animals live in the rain-forest. Toucans are colorful birds with short and thick necks. The bright colors on their bill can tear off pieces of big fruit. They eat lizards and small birds and live in holes in trees. Toucans live in the canopy layer in South and Central America. They are important because they help to scatter the seed from the fruit they eat.
Question: Which of the following statements are supported by the information given in the text?
a. The rain forests are only found in Central Africa and Australia.
b. There is no sunlight in the emergent layer of the rain forest.
c. Some plants live on the branches of other plants.
d. Toucans scatter seeds from fruits and berries.
Question 1:- b c
Question 2:- a b
Question 3:- b e
Question 4:- c d
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