All of the following may be components of a virus EXCEPT___________
Giải bởi qa.haylamdo.com
Kỹ năng: Đọc
Giải thích:
Tất cả những thứ sau có thể là thành phần cấu tạo của virus, ngoại trừ
A. RNA
B. tế bào thực vật.
C. carbon hydrate
D. lớp vỏ protein
Ngoại trừ ý B, tất cả các thành phần còn lại đề được đề cập đến ở đoạn 2: ‘Viruses are very simple pieces of organic material composed only of nucleic acid, either DNA or RNA, enclosed in a coat of protein made up of simple structural units (some viruses also contain carbohydrates and lipids.) Virus là những vật chất hữu cơ rất nhỏ chỉ được tạo nên bởi axit nucleic, hoặc DNA hoặc RNA, được bọc trong lớp vỏ protein tạo nên từ những đơn vị cấu trúc đơn giản (một số loại virus còn chứa carbonhydrat và lipid)
Chọn B
Read the following passage and mark the letter A, B, C, or D to choose the word or phrase that best fits each of the numbered blanks from 25 to 29
KEEPING THE WORLD IN OUR POCKETS
Faster processors and advances in memory technology have made today's smartphones much more powerful than a lot of computers from just a decade ago. With wireless technology, people can surf the internet, play online games, send e-mail, and do (25) ___________all the things they once could only do on a computer. (26) ___________they have the power to do things constantly at their fingertips.
Many people (27) ___________that while smartphones are powerful tools, they are making people reliant on them. Why would a person need to learn to read a map when he can get directions to anywhere by simply asking his phone a question? Who needs to learn Math when you have immense calculating power in your pocket at all times? What (28) ___________is there to memorize facts about history, art, or geography when that information is readily available from a portable Internet interface?
There are just some of the questions being asked and answered as smartphone usage continues to spread. Like any technology, smartphones have their advantages, but they do have disadvantages as well that we must (29) ___________an eye on.
Mark the letter A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined bold word(s) in each of the following questions.
I am gripped with a fever whenever a new year is coming.
Read the following passage and mark the letter A, B, C or Don your answer sheet to indicate the correct answer to each of the questions from 30 to 34
The term "virus" is derived from the Latin word for poison or slime. It was originally applied to the noxious stench emanating from swamps that was thought to cause a variety of diseases in the centuries before microbes were discovered and specifically linked to illness. But it was not until almost the end of the nineteenth century that a true virus was proven to be the cause of a disease.
The nature of viruses made them impossible to detect for many years even after bacteria had been discovered and studied. Not only are viruses too small to be seen with a light microscope, they also cannot be detected through their biological activity, except as it occurs in conjunction with other organisms. In fact, viruses show no traces of biological activity by themselves. Unlike bacteria, they are not living agents in the strictest sense Viruses are very simple pieces of organic material composed only of nucleic acid, either DNA or RNA, enclosed in a coat of protein made up of simple structural units (some viruses also contain carbohydrates and lipids.) They are parasites, requiring human, animal, or plant cells to live. The virus replicates by attaching to a cell and injecting its nucleic acid. Once inside the cell, the DNA or RNA that contains the virus' genetic information takes over the cell's biological machinery, and the cell begins to manufacture viral proteins rather than its own.
Which of the following is the best title for the passage?
- Peter: "What ___________ your flight?”
- Mary: “There was a big snowstorm in Birmingham that delayed a lot of flights."
Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.
Before microbes were discovered, it was believed that some diseases were caused by
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
I assume that you are acquainted ___________ this subject since you are responsible ___________ writing the accompanying materials.
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three tin the pronunciation in each of the following questions.
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three tin the pronunciation in each of the following questions.
I would rather Jane ___________ my brother so much money when he asked for. I know for sure that I will have to pay his debt.
The author implies that bacteria were investigated earlier than viruses because___________
