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Câu hỏi:

19/07/2024 123

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?

A. New Developments in Viral Research

B. Exploring the Causes of Disease

C. DNA: Nature's Building Block

D. Understanding Viruses

Đáp án chính xác
 Xem lời giải

Trả lời:

verified Giải bởi Vietjack

Kỹ năng: Đọc

Giải thích: Tiêu đề nào sau đây là phù hợp nhất với đoạn văn

A. Những phát triển mới trong ngành nghiên cứu về virus

B. Khám phá các nguyên nhân gây bệnh

C. DNA: đơn vị căn bản của tự nhiên

D. Tìm hiểu Virus

Đoạn văn bàn về nguồn gốc của từ virus, các đặc tính của virus và cấu tạo của chúng.
Chọn D

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CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

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.

Xem đáp án » 08/09/2022 272

Câu 2:

By appearing on the soap powder commercials, she became a ___________ name.

Xem đáp án » 08/09/2022 250

Câu 3:

- Peter: "What ___________ your flight?”  

     - Mary: “There was a big snowstorm in Birmingham that delayed a lot of flights."

Xem đáp án » 08/09/2022 200

Câu 4:

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.

Xem đáp án » 08/09/2022 200

Câu 5:

Neither of the two candidates who had applied for admission to the Industrial Engineering apartment were eligible for admission.

 

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Câu 6:

The acoustics in the concert hall were very poor and it was necessary to ___________ performers' voices.

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Câu 7:

Failing to submit the proposal on time was ___________ for Tom

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Câu 8:

She agreed that all the present paperwork ___________ for everyone to have more time to socialize.

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Câu 9:

(26) ___________they have the power to do things constantly at their fingertips.

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Câu 10:

Jack has a collection of ___________

Xem đáp án » 08/09/2022 157

Câu 11:

It was relatively easy for him to learn baseball because he had been a cricket player.

 

Xem đáp án » 08/09/2022 147

Câu 12:

Before microbes were discovered, it was believed that some diseases were caused by

Xem đáp án » 08/09/2022 147

Câu 13:

Why is graphite a good material for guitar necks?

Xem đáp án » 08/09/2022 144

Câu 14:

Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.  

The presentation by Dr. Dineen was self-explanatory.

Xem đáp án » 08/09/2022 141

Câu 15:

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.

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