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 from 466 to 472. A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before ...
Tô Hương Liên | Chat Online | |
07/09 11:23:21 (Tiếng Anh - Lớp 12) |
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 from 466 to 472.
A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident. In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca - Cola, the world - famous carbonated soft drink.
Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food: the microwave oven.
Which title best summarizes the main idea of the passage?
Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. History's Most Important Inventions 0 % | 0 phiếu |
B. Accidental Inventions and Discoveries 0 % | 0 phiếu |
C. How to Become a Great Inventor 0 % | 0 phiếu |
D. You Don't Always Get What You Want 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 461 to 465. WILLIAM THE HERO! Brave William Baldock, who is six years old, is a ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 461 to 465. WILLIAM THE HERO! Brave William Baldock, who is six years old, is a ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 461 to 465. WILLIAM THE HERO! Brave William Baldock, who is six years old, is a ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 461 to 465. WILLIAM THE HERO! Brave William Baldock, who is six years old, is a ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 461 to 465. WILLIAM THE HERO! Brave William Baldock, who is six years old, is a ... (Tiếng Anh - Lớp 12)
- 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 For a century before the Erie Canal was built, there was much discussion among the general population of the ... (Tiếng Anh - Lớp 12)
- 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 For a century before the Erie Canal was built, there was much discussion among the general population of the ... (Tiếng Anh - Lớp 12)
- 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 For a century before the Erie Canal was built, there was much discussion among the general population of the ... (Tiếng Anh - Lớp 12)
- 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 For a century before the Erie Canal was built, there was much discussion among the general population of the ... (Tiếng Anh - Lớp 12)
- 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 For a century before the Erie Canal was built, there was much discussion among the general population of the ... (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Theo GS. Trần Ngọc Thêm, ăn, mặc, ở, đi, lại là những yếu tố thuộc thành tố văn hóa nào? (Tổng hợp - Đại học)
- Xác định loại hình kinh tế - văn hóa dựa trên: (Tổng hợp - Đại học)
- Câu tục ngữ: “Giặc đến nhà đàn bà cũng đánh” là biểu hiện của: (Tổng hợp - Đại học)
- Schools are offering educational programs to have children _______ about the importance of conservation. (Tiếng Anh - Lớp 12)
- Bản chất của văn hóa được xem xét trong mối quan hệ: (Tổng hợp - Đại học)
- The more we understand the power of mass media, _______ we can use it for positive change. (Tiếng Anh - Lớp 12)
- Cách xác định các yếu tố cấu thành chỉnh thể văn hóa dựa trên nguyên tắc: (Tổng hợp - Đại học)
- Preserving natural habitats is key to protect biodiversity, _______ ultimately benefits all living things. (Tiếng Anh - Lớp 12)
- ASEAN is a growing and influential organisation that is playing _______ increasingly important role in the world. (Tiếng Anh - Lớp 12)
- Văn hóa thực hiện được chức năng của nó khi nó vận hành với tính cách là: (Tổng hợp - Đại học)