According to the passage, why can glass be more easily shaped into specific forms than can metals
A. It resists breaking when heated
B. It has better optical properties
C. It retains heat while its viscosity changes
Giải bởi Vietjack
Chọn D
Thông tin: Unlike metals that flow or “freeze” at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like a thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. (Không giống như kim loại chảy hoặc “đông cứng” ở nhiệt độ cụ thể, thủy tinh mềm dần khi nhiệt độ tăng lên, trải qua các giai đoạn dẻo khác nhau cho đến khi chảy giống như xi-rô đặc. Mỗi giai đoạn của tính dẻo cho phép thủy tinh được chế tác thành nhiều dạng khác nhau, bằng các kỹ thuật khác nhau và nếu được làm lạnh đột ngột, vật thể vẫn giữ được hình dạng đạt được tại thời điểm đó.)
He looks very aggressive and threatening and so his soft, gentle voice is rather......
If you still want to maintain this relationship, you ____ behave improperly like that.
In case you’ve suffered from the injury, you __________ see the doctor today.
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction
He was in a great hurry and had no time to think it over. Otherwise, he had found another way out.
Whenever problems come up, we discuss frankly and find _______quickly.
Give a suitable preposition:
In the UK, poor air quality is responsible _______ some 40,000 deaths each year.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions
If parents bring up a child with the sole aim of turning the child into a genius, they will cause a disaster. According to several leading educational psychologists, this is one of the biggest mistakes which ambitious parents make. Generally, the child will be only too aware of what his parents expect, and will fail. Unrealistic parental expectations can cause great damage to children. However, if parents are not too unrealistic about what they expect their children to do, but are ambitious in a sensible way, the child may succeed in doing very well – especially if the parents are very supportive of their child. Michael Collins is very lucky. He is crazy about music, and his parents help him a lot by taking him to concerts and arranging private piano and violin lessons for him. They even drive him 50 kilometers twice a week for violin lessons. Michael’s mother knows very little about music, but his father plays the trumpet in a large orchestra. However, he never makes Michael enter music competitions if he is unwilling. Winston Smith, Michael’s friend, however, is not so lucky. Both his parents are successful musicians, and they set too high a standard for Winston. They want their son to be as successful as they are and so they enter him for every piano competition held. They are very unhappy when he does not win. Winston is always afraid that he will disappoint his parents and now he always seems quiet and unhappy.
One of the serious mistakes parents can make is to _____.
In 1999, the king's Chaipattana Aerator obtained Thai ____ for his rain-making techniques.
The only thing that kept us out of prison was the way he spoke the local dialect.
⇒ But for his command …
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phases that best fits each of the numbered blanks
Women nowadays have more advantages than those in the past. For example, our great grandmothers were not allowed to go to school or to work to earn their own living. (1) ______, they had to depend on their husbands financially. Modern women, on the contrary, can get good education, have their own careers, and (2) ______ their interests. They can even take good positions in politics if they are competent (3) ______ it. However, women living in our modern society have their (4) ______ too. Today women work harder than their great grandmothers so that they can gain the (5) ______ between working life and family life.
Indicate the underlined part that needs correction:
I think a good health is important, and so is education while money, to some extent, is not.
We are having ________ terrible weather which is quite strange. Usually ______ weather in UK is not this bad.
