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Q2016703 Inglês

Fonte: Instagram #cambridgeenglishteaching


The word “bubbles” can also be used when describing the effects of
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Q2013441 Inglês
Balloons

Have you ever wondered what keeps a hot air balloon flying? The same principle that keeps food frozen in the open chest freezers at the grocery store allows hot air balloons to fly. It’s a very basic principle: Hot air rises and cold air falls. So while the super-cooled air in the grocery store freezer settles down around the food, the hot air in a hot air balloon pushes up, keeping the balloon floating above the ground. In order to understand more about how this principle works in hot air balloons, it helps to know more about hot air balloons themselves.

A hot air balloon has three major parts: the basket, the burner, and the envelope. The basket is where passengers ride. The basket is usually made of wicker. This ensures that it will be comfortable and add little extra weight. The burner is positioned above the passenger’s heads and produces a huge flame to heat the air inside the envelope. The envelope is the colorful fabric balloon that holds the hot air. When the air inside the envelope is heated, the balloon rises.

The pilot can control the up-and-down movements of the hot air balloon by regulating the heat in the envelope. To ascend, the pilot heats the air in the envelope. When the pilot is ready to land, the air in the balloon is allowed to cool and the balloon becomes heavier than air. This makes the balloon descend.

Before the balloon is launched, the pilot knows which way the wind is blowing. This means that she has a general idea........................... which way the balloon will go. But, sometimes the pilot can actually control the direction that the balloon flies while.......................................... flight. This is because the air above the ground is sectioned .........................................layers in which the direction of the wind may be different. So even though the pilot can’t steer the balloon, she can fly or higher or lower into a different layer ......................................air. Some days the difference between the direction of the wind between layers is negligible. But other days the difference is so strong that it can actually push the balloon in a completely different direction!


The word grocery in the first paragraph of the text, “… at the grocery store allows hot air balloons to fly.” is a place where you can buy:
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Q2012921 Inglês
Choose one of the alternatives below: How much water do we have?
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Q1998022 Inglês

Read the following text and answer question.


Importance of Aquaculture 



Aquaculture involves the art, science and business of breeding aquatic animals and plants in fresh or marine waters for human use. It also extends to the marketing of such organisms in a controlled environment. It is a kind of agriculture, and therefore, it requires inputs such as clean water and nutrients. It also requires storage for harvested produce, transportation and marketing facilities.

Inputs often depend on the species that are farmed. Species lower on the aquatic food chain usually require less input, as they feed on microorganisms and are fine in just clean water. More inputs like fish or fishmeal, cereals, or grains are required, as we get higher on the food chain with species like salmon or tuna.

All over the world, the demand for seafood has increased because people have learned that seafood as part of regular diets are healthier and help fight cardiovascular disease, cancer, Alzheimer’s and many other major illnesses.

Aquaculture will add to wild seafood, and make it _______ and accessible to all.

Aquaculture business provides tax and royalty revenue to local governments. Besides, there is also potential revenue from exports. 



(Adapted from: https://goo.gl/qcbcfY. Access: 01/25/2018)

The adverb often in “Inputs often depend on the species that are farmed” can be replaced by the adverb
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Q1998001 Inglês

Read the following text and answer question.


Introduction to Climate change


Many people make Climate Change and Global Warming a scary and difficult thing to understand, _______ it’s not.

Scientists have warned that the world's climate has changed a lot, and has affected many living and non-living things. Many places _______ were warmer are now getting colder, and many colder regions are getting much colder or even warmer nown as Global Warming).

For example, _________ 1901 and 2012, it is believed that the earth's temperature has risen by 0.89 °C. Rainfall amounts have also risen in the mid-latitudes of the northern hemisphere since the beginning of the 20th Century. It is also believed that sea levels have risen up to about 19cm globally, with lots of glaciers melting in addition.

Some people do not believe that these are caused by human activities. They think it is all political actions and falsehood intended to cause panic among humans.

Well, whatever it is, we would like to know more, and take a few good points from this confusion, and use them to make our world a better place to live. 


(Adapted from: https://goo.gl/xQnjzZ. Access: 01/22/2018)



What is the best preposition to complete this sentence: “For example, _________ 1901 and 2012, it is believed that the earth's temperature has risen by 0.89°C.” ?
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Respostas
201: C
202: E
203: C
204: E
205: C