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Dạng bài Đọc hiểu lớp 12

In the third paragraph, the author compares cells that have been genetically altered by biotechnicians to_______ .

Read the following passage and mark the letter A, B, C, or D to indicate the correct anstwer to each of the questions from 56 to 65.

The first two decades of the 20th century were doininated by the microbe hunters. These hunters had tracked down one after another of the microbes responsible for the most dreaded scouraes of many centuries: tuberculosis, cholera, diphtheria. But there remained some lerrible diseases for which no microbe could be incriminated: scurvy, pellagra, rickets, beriberi. Then it was discovered that these diseases were caused by the lack of vitamin, a trace substance in the diet. The diseases could be prevented or cured by consuming foods that contained the vitamins. And so in the decades of the 1920's and 1930’s, nutrition became a Science and the vitamin hunters replaced the microbe hunters.

In the 1940’s and 1950’s, biochemists strived to learn why each of the vitamins was essential for Health. They discovered that key enzymes in inetabolism depend on one or another of the vitamins as coenxymes to perform the chemistry that provides cells with energy for growth and fuction. Now, these enzyme hunters occupied center stage. You are aware that the enzyme hunters have becn replaced by a new breed of hunters who are tracking genes - the blueprints for each of the enzymes - and are discovering the defective genes that cause inherited diseases — diabetes, cystic fibrosis. These gene hunters, or genetic engineers, use recombinant DNA technology to identify and clone genes and introduce them into bacterial cells and plants to create factories for the massive production of hormones and vaccines for medicine and for better crops for agricullure, biotechnology has become a multibillion-dollar industry.

In view of the inexorable progress in Science, we can expect that the gene hunters will be replaeed in the spotlight. When and by whom? Which kind of hunter will dominate the scene in the last decade of our warning century and in the early decades of the riext? I wonder whether the hunters who will occupy the spotlight will be neurobiologists who apply the techniques of the enzyme and gene hunters to the functions of the brain. What to call them? The head hunters. I will return to them later.

Câu 12490: In the third paragraph, the author compares cells that have been genetically altered by biotechnicians to_______ .

A. gardens   

B. factories

C. hunters

D. spotlights

Câu hỏi : 12490
  • Đáp án : B
    (0) bình luận (0) lời giải

    Giải chi tiết:

    In the third paragraph, the author compares cells that have been genetically altered by biotechnicians to_____ . (Trong đoạn 3, tác giả so sánh các tế bào được các nhà sinh học biến đổi gien với_________ .)

    Đáp án là B: factories (nhà máy).

    Ý trong bài: "These gene hunters, or genetic engineers, use recombinant DNA technology to identify and clone genes and introduce them into bacterial cells and plants to create factories for the massive production of hormones... ” (Các kĩ sư di truyền dùng công nghệ tái tổ hợp ADN để xác định và nhân bản ghen và đưa chủng vào tế bào vi khuẩn và thực vật để tạo nên các “nhà máy” sản xuất lượng lớn hoỏc-môn...)

    Lời giải sai Bình thường Khá hay Rất Hay

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