Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 21 to 25.
Old newspapers, magazines and other unwanted papers are collected by the rag-and-bone man. The recovered paper is then sorted according to the grade or type of paper before being sent to the recycling centre. There, the sorted papers are gathered and bundled into tight bales before they are transported to a paper manufacturing factory where they will be recycled into new paper. Only paper free of contaminants such as food, plastic, metal and other rubbish can be successfully recycled; otherwise, impurities and bacteria might be introduced into the recycling process and thereby affect the quality of the paper produced.
At the paper mill, recovered paper is chopped up and mixed with water to form pulp slurry, which is then subjected to a series of washing where soap-like chemicals called surfactants remove ink from the paper. After the deinking process, the pulp slurry is sprayed onto a huge flat wire screen that is rapidly moving through the paper machine. Water drains out and fibres bond together into a web of paper which is pressed between rollers to squeeze out more water and smoothen the surface. Heated rollers dry the paper, which is then slit into smaller rolls or sheets and finally removed from the paper machine.
Papermaking fibres can be typically recycled five to seven times before they become too short and are rejected by the paper machine. Recycling paper certainly benefits the environment because it requires at least 50 per cent less energy and up to 75 per cent less water than making paper from virgin fibres. Also, it reduces the demand for virgin fibre in the world.
So, have you done your part to save Mother Earth?
What does "recovered paper" in paragraph 1 refer to?
Giải bởi Vietjack
Chọn đáp án A
More and more schools have built recently to make it convenient for children to get schooling,
Read the following passage and mark the letter A, B, Cor D to indicate the correct word or phrase that best fits each of the numbered blanks from 26 to 30.
People’s lives will change dramatically in the next 50 years. We anticipate advances in genetics, medicine, and transportation, the opening of international markets, and more. People look enthusiastically (26) ________ the future. Yet, life today is also dramatically different from life 50 years ago, and that life was dramatically different from life 100 years ago.
Is life "better" now than it was fifty years ago? For many people, (27) ________ answer is yes. But for many, the answer is no. Hunger, poverty, misery, and cruelty existed a hundred years ago. They existed thousands of years ago, and they exist today. "Technology" and "development" have (28) ________ life dramatically for great numbers of people. But to some people these benefits are not available, and their existence alone does not address the (29) ________ of those people. For all our "advancement", a large part of our world lives worse, or no better, than it did fifty years ago. A future in which all people could (30) ________ the fruits of this advancement would be a future truly worth celebrating.
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
There is a guest house at the corner of this street where we can stay there.
We wish today is sunny so that we could spend the day in the countryside communicating with nature.
The Covid-19 pandemic made it impossible for us to start our school year.
Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
Mark the letter A, B, C or D to indicate the sentence that is closest in meaning to each of the following questions.
The bus normally takes longer than the train.
Mark the letter A, B, Cor D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
The building has a smoke detector ________ any fires can be detected immediately.
