Spider silk

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题目与答案

1. a comparison of the ways two materials are used to replace silk-producing glands.
   • A
   • B
   • C
   • D
   • E
   • F

   答案：E

   原文定位：At DuPont, researchers have used both yeast and bacteria as hosts to grow the raw material, which they have spun into fibres;We break open the bacteria, separate out the globules of protein and use them as the raw starting material. With yeast, the gene system can be designed so that the material excretes the protein outside the yeast for better access," he says

2. predictions regarding the availability of the synthetic silk.
   • A
   • B
   • C
   • D
   • E
   • F

   答案：H

   原文定位：Dorsc h is excited by the prospect of new super-strong materials but he warns they are many years away;We are at an early stage but theoretical predictions are that we will wind up with a very strong;tough material;

   同义替换：「availability」↔「at an early stage」，「synthetic silk」↔「new super-strong materials」

3. on-going research into other synthetic materials.
   • A
   • B
   • C
   • D
   • E
   • F

   答案：I

   原文定位：The spider is not the only creature that has aroused the interest of material scientists;They have also become envious of the natural adhesive secreted by the sea mussel

   同义替换：「on-going research」↔「aroused the interest of material scientists」，「other synthetic materials」↔「natural adhesive secreted by the sea mussel」

4. the research into the part of the spider that manufactures silk.
   • A
   • B
   • C
   • D
   • E
   • F

   答案：D

   原文定位：To recreate the material, scientists, including Randolph Lewis at the University of Wyoming, first examined the silk-producing gland of the spider

   同义替换：「research」↔「examined」，「the part of the spider that manufactures silk」↔「silk-producing gland of the spider」

5. the possible application of the silk in civil engineering.
   • A
   • B
   • C
   • D
   • E
   • F

   答案：G

   原文定位：They say that earthquake-resistant suspension bridges hung from cables of synthetic spider silk fibres may become a reality

   同义替换：「application」↔「uses」，「civil engineering」↔「earthquake-resistant suspension bridges」，「silk」↔「synthetic spider silk fibres」

6. Synthetic gene growth in 19_____ or 20_____

   ↓

   答案：yeast|||bacteria

   原文定位：At DuPont, researchers have used both yeast and bacteria as hosts to grow the raw material, which they have spun into fibres

7. globules of 21_____

   ↓

   答案：protein

   原文定位：We break open the bacteria, separate out the globules of protein and use them as the raw starting material

8. dissolved in 22_____

   ↓

   答案：chemical solvents

   原文定位：we substituted man-made approaches and dissolved the protein in chemical solvents

9. passed through 23_____

   ↓

   答案：small holes

   原文定位：dissolved the protein in chemical solvents, which are then spun to push the material through small holes to form the solid fibre

10. to produce 24_____

    答案：solid fibre

    原文定位：dissolved the protein in chemical solvents, which are then spun to push the material through small holes to form the solid fibre

    同义替换：「produce」↔「form」

11. 25 Biosilk has already replaced nylon in parachute manufacture.
    • TRUE
    • FALSE
    • NOT GIVEN

    答案：FALSE

    原文定位：Army scientists are already looking at the possibilities of using it for lightweight, bullet- proof vests and parachutes

    同义替换：「has already replaced」↔「looking at the possibilities」

12. 26 The spider produces silk of varying strengths.
    • TRUE
    • FALSE
    • NOT GIVEN

    答案：TRUE

    原文定位：The drag-line silk, which forms the radial arms of the web, is stronger than the other parts of the web

    同义替换：「varying strengths」↔「stronger than the other parts」，「spider produces silk」↔「other parts of the web」

13. 27 Lewis and Dorsch co-operated in the synthetic production of silk.
    • TRUE
    • FALSE
    • NOT GIVEN

    答案：NOT GIVEN

    原文定位：Randolph Lewis;Robert Dorsch