English is the study of the English language. The goal is to improve communication skills by practicing listening, speaking, reading, writing, and understanding language rules like pronunciation, vocabulary, and grammar.
If present trends continue, the world would face major crises by end of the century: insufficient cheap convenient energy. For without such energy, industrial production will fall, agricultural output will drop, transport will be restricted and standard of living in developed countries will plummet. At present, almost all our energy comes from fossil fuels. The earth’s reserves of fossil fuels have been formed from organic matter subjected to enormous heat and pressure of millions of years. But such reserves are finite. Because power demand is increasing very rapidly, fossil fuels will be exhausted within a relatively short time. We can estimate the amount of recoverable fuel under the surface of the earth and we know the rate at which it is being extracted. Fairly simple calculation can therefore determine its remaining life. If present trends continue, gas and oil reserves will be exhausted by the middle of the 21st century-about 70 years from now. Similar estimates for coal and wood reserves suggest a projected supply of 250-300 years. Of course long before fossil fuels are exhausted, demand will greatly exceed supply.
For too many years, the world has consumed fossil fuels with little thought for the future. In fact, world energy consumption increased almost 600% between 1900 and 1965 and it is projected to increase by another 450% between 1965 and the year 2000. Crude oil has been pumped out of the ground for about 100 years, but over half of it is been consumed in the past 18 years. Coal has been mined for over 800 years, but over a half of it has been extracted in the past 37 years. In sum, most of the world’s consumption of energy from fossil fuels throughout history has taken place within living memory.
The expression 'standard of living in developed countries will plummet' means Options:Choose the option that complete the gap(s).
Making a phone call instead of paying a visit represents a _______trend?
Options:Choose the option nearest in meaning to the underlined words :
His summary of the meeting was brief and to the point
Options:Choose the word or phrase from options A - E which has the nearest in meaning to the underlined word or words in each sentences:
You can talk to her.
Options:Complete the sentences with the correct options from the list below:
I started writing this test at 8 : 00 a.m It is 10 : 00 a.m now. By 11 : 00 a.m. I _____ it for three hours
Options:In the question below choose the word(s) or phrase(s) which best fills(s) the gap(s):
_____ i know, nobody has seen any loepards in this area
Options:Choose the option that has the same vowel sound as the one represented by the letters underlined.
Air?
Options:In the question below choose the word(s) or phrase(s) which best fill(s) the gap:
Silk materials ought be be prohibited _____ being brought into the country
Options:Fill each gap with the most appropriate option from the list following the gap.
The accident occurred when the driver of the car _____ the lorry?
Options: