练习册

  • 练习册
  • 试题
    material made from wool 羊毛衣 【查看更多】

     

    题目列表(包括答案和解析)


    Harvard researchers have created a tough, low-cost, biodegradable (可生物降解的) material inspired by insects' hard outer shells. The material's inventors say it has a number of possible uses and someday could provide a more environmentally friendly alternative to plastic. The material, made from shrimp ('虾) shells and proteins produced from silk, is called "shrilk." It is thin, clear, flexible and strong.
    A major benefit of the material is its biodegradability. Plastic's toughness and flexibility represented a revolution in materials science during the 1950s and '60s. Decades later, however, plastic's very durability (耐用性) is raising questions about how appropriate it is for one-time products such as plastic bags, or short-lived consumer goods, used in the home for a few years and then cast into a landfill where they will degrade for centuries. What is the point of making something that lasts 1,000 years?
    Shrilk not only will degrade in a landfill, but its basic components are used as fertilizer(肥料), and so will enrich the soil.
    Shrilk has great potential, the inventors said. Materials from which it is made are plentiful in nature, found in everything ranging from shrimp shells, insect bodies to living plants. That makes shrilk low cost, and its mass production possible should it be used for products demanding a lot of material.
    Work on shrilk is continuing in the lab. The inventors said the material becomes flexible when wet, so they're exploring ways to use it in wet environments. They're also developing simpler production processes, which could be used for non-medical products, like for computer cases and other products inside the home. They're even exploring combining it with other materials, like carbon fibers, to give it new properties.
    【小题1】Paragraph I of the passage is mainly about shritk's_____.

    A．remarkable designB．interesting name
    C．major featuresD．basic elements
    【小题2】What has become a concern about plastic?
    A．Using it properly.
    B．Producing it cheaply.
    C．Developing its properties quickly.
    D．Evaluating its contributions fairly.
    【小题3】According to the inventors, shrilk has great potential partly because_____.
    A．it can help plastic degrade
    B．it can be found in living things
    C．its mass production has been realized
    D．its raw materials are abundant in mature
    【小题4】What are the inventors doing in the lab?
    A．Replacing carbon fibers with shrilk.
    B．Testing ahrilk's use in wet conditions.
    C．Making shrilk out of used household goods.
    D．Improving shrilk's flexibility for medical purposes.
    【小题5】Which of the following can be the best title for the passage?
    A．Recent Progress in Environmental Protection
    B．Benefits of Insects in Scientific Research
    C．The Harm of One-time Products
    D．A Possible Alternative to Plastic

    查看答案和解析>>

    Directions：Read the following three passages．Each passage is followed by several questions or unfinished．statements For each of them there are four chokes marked A、B、C andD．Choose the one that fits best according to the information given in the passage．

    　　Harvard researchers have created a tough, low－cost, biodegradable(可生物降解的)material inspired by insects' hard outer shells．The material's inventors say it has a number of possible uses and someday could provide a more environmentally friendly alternative to plastic．The material, made from shrimp('虾)shells and proteins produced from silk, is called"shrilk．"It is thin, clear, flexible and strong．

    　　A major benefit of the material is its biodegradability．Plastic's toughness and flexibility represented a revolution in materials science during the 1950s and '60s．Decades later, however, plastic's very durability(耐用性)is raising questions about how appropriate it is for one－time products such as plastic bags, or short－lived consumer goods, used in the home for a few years and then cast into a landfill where they will degrade for centuries．What is the point of making something that lasts 1, 000 years?

    　　Shrilk not only will degrade in a landfill, but its basic components are used as fertilizer(肥料), and so will enrich the soil．

    　　Shrilk has great potential, the inventors said．Materials from which it is made are plentiful in nature, found in everything ranging from shrimp shells, insect bodies to living plants．That makes shrilk low cost, and its mass production possible should it be used for products demanding a lot of material．

    　　Work on shrilk is continuing in the lab．The inventors said the material becomes flexible when wet, so they're exploring ways to use it in wet environments．They're also developing simpler production processes, which could be used for non－medical products, like for computer cases and other products inside the home．They're even exploring combining it with other materials, like carbon fibers, to give it new properties．

    (1)

    Paragraph I of the passage is mainly about shritk's ________．

    [　　]

    A．

    remarkable design

    B．

    interesting name

    C．

    major features

    D．

    basic elements

    (2)

    What has become a concern about plastic?

    [　　]

    A．

    Using it properly．

    B．

    Producing it cheaply．

    C．

    Developing its properties quickly．

    D．

    Evaluating its contributions fairly．

    (3)

    According to the inventors, shrilk has great potential partly because ________．

    [　　]

    A．

    it can help plastic degrade

    B．

    it can be found in living things

    C．

    its mass production has been realized

    D．

    its raw materials are abundant in mature

    (4)

    What are the inventors doing in the lab?

    [　　]

    A．

    Replacing carbon fibers with shrilk．

    B．

    Testing ahrilk's use in wet conditions．

    C．

    Making shrilk out of used household goods．

    D．

    Improving shrilk's flexibility for medical purposes．

    (5)

    Which of the following can be the best title for the passage?

    [　　]

    A．

    Recent Progress in Environmental Protection

    B．

    Benefits of Insects in Scientific Research

    C．

    The Harm of One－time Products

    D．

    A Possible Alternative to Plastic

    查看答案和解析>>

    阅读理解。
         Harvard researchers have created a tough, low-cost, biodegradable (可生物降解的) material
    inspired by insects' hard outer shells. The material's inventors say it has a number of possible uses and
    someday could provide a more environmentally friendly alternative to plastic. The material, made from
    shrimp (虾) shells and proteins produced from silk, is called "shrilk." It is thin, clear, flexible and strong.
         A major benefit of the material is its biodegradability. Plastic's toughness and flexibility represented a
    revolution in materials science during the 1950s and '60s. Decades later, however, plastic's very
    durability (耐用性) is raising questions about how appropriate it is for one-time products such as plastic
    bags, or short-lived consumer goods, used in the home for a few years and then cast into a landfill where
    they will degrade for centuries. What is the point of making something that lasts 1,000 years?
         Shrilk not only will degrade in a landfill, but its basic components are used as fertilizer (肥料), and so
    will enrich the soil.
         Shrilk has great potential, the inventors said. Materials from which it is made are plentiful in nature,
    found in everything ranging from shrimp shells, insect bodies to living plants. That makes shrilk low cost,
    and its mass production possible should it be used for products demanding a lot of material.
         Work on shrilk is continuing in the lab. The inventors said the material becomes flexible when wet, so
    they're exploring ways to use it in wet environments. They're also developing simpler production
    processes, which could be used for non-medical products, like for computer cases and other products
    inside the home. They're even exploring combining it with other materials, like carbon fibers, to give it
    new properties.
    1. Paragraph 1 of the passage is mainly about shrilk's _________.
    A. remarkable design
    B. interesting name
    C. major features
    D. basic elements
    2. What has become a concern about plastic?
    A. Using it properly.
    B. Producing it cheaply.
    C. Developing its properties quickly.
    D. Evaluating its contributions fairly.
    3. According to the inventors, shrilk has great potential partly because _________.
    A. it can help plastic degrade
    B. it can be found in living things
    C. its mass production has been realized
    D. its raw materials are abundant in nature
    4. What are the inventors doing in the lab?
    A. Replacing carbon fibers with shrilk.
    B. Testing shrilk's use in wet conditions.
    C. Making shrilk out of used household goods.
    D. Improving shrilk's flexibility for medical purposes.
    5. Which of the following can be the best title for the passage? 
    A. Recent Progress in Environmental Protection
    B. Benefits of Insects in Scientific Research
    C. The Harm of One-time Products
    D. A Possible Alternative to Plastic

    查看答案和解析>>

    第二节：信息匹配（共5小题，每小题2分，满分10分）

    下面是一组应用文及其应用场合，请阅读下列应用文和相关信息，并按要求匹配信息。

    首先，请阅读下列应用文。

    A．Share Flat

    Goodhope Valley nice flat. The other room is ready for use immediately –quiet and convenient, fully furnished, park view, $ 45 p. w. including bills of phone and power.

    Female non-smoker. No pet.

    Helen 27756403 or 25717749

    B．Moving Sale

    Armchairs, a set of 4, red, $ 200; wooden coffee table,black,$50; fridge, big, double doors,$ 400; old books of various kinds,4$ each.

    C．Crisco Oil

    For lower saturated fat, corn oil and olive oil can’t beat Crisco Oil.

    Saturated Fat Per Tablespoon:

    Crisco oil : 1.5 grams

    Corn oil : 2.0 grams

    Olive oil : 2.0 grams

    D．Mini Camera

    Fujiko has produced an amazing new mini camera—the advanced 1001ix. No bigger than a credit card! Convenient and very reliable. Easy to use. Automatic focus and flash. Made from an attractive and strong material.

    Price: $ 199.98

    E. Special Jewelry for your ears

    Made of gold and attractive.

    When you are tired of loud disco music, or bored at a party, you don’t have to listen. Simply put them on. Thousands of satisfied customers! A bargain at $109.

    F. Remote Headphones

    Radio and TV programs can be heard from 100 metres away with Remote Headphones. This exciting new product gives you freedom to move around plus top quality sound.

    Price : $ 110.98

    请阅读以下购物者的信息，然后匹配购物者和他/她拟要购买的物品的广告：

    66. Jane’s mother wants to fry some bread for their lunch but she found there’s no oil in the kitchen and ask Jane to buy some while shopping.

    67. Jack’s girl friend, Helen, came to Beijing for further study on Chinese literature but she couldn’t find a suitable living place so she just wants to live together with someone else.

    68.Maggie just bought a second-hand flat a month ago so she wants to buy some furniture for her new home and maybe she will go shopping on the coming Sunday.

    69. Nathan’s father is retired from work and stays at home watching TV all day

    long so Nathan has decided to buy him something convenient when he watches TV.

    70. Nelda, my English teacher, decided to have a tour in China during the coming summer holidays so he decided to buy something to be useful during his trip.

     

    查看答案和解析>>

    下面是一组应用文及其应用场合，请阅读下列应用文和相关信息，并按要求匹配信息。
    首先，请阅读下列应用文。
    A. Share Flat
    Goodhope Valley nice flat. The other room is ready for use immediately –quiet and convenient, fully furnished, park view, $ 45 p. w. including bills of phone and power.
    Female non-smoker. No pet.
    Helen 27756403 or 25717749
    B. Moving Sale
    Armchairs, a set of 4, red, $ 200; wooden coffee table,black,$50; fridge, big, double doors,$ 400; old books of various kinds,4$ each.
    C. Crisco Oil
    For lower saturated fat, corn oil and olive oil can’t beat Crisco Oil.
    Saturated Fat Per Tablespoon:
    Crisco oil : 1.5 grams
    Corn oil : 2.0 grams
    Olive oil : 2.0 grams
    D. Mini Camera
    Fujiko has produced an amazing new mini camera—the advanced 1001ix. No bigger than a credit card! Convenient and very reliable. Easy to use. Automatic focus and flash. Made from an attractive and strong material.
    Price: $ 199.98
    E. Special Jewelry for your ears
    Made of gold and attractive.
    When you are tired of loud disco music, or bored at a party, you don’t have to listen. Simply put them on. Thousands of satisfied customers! A bargain at $109.
    F. Remote Headphones
    Radio and TV programs can be heard from 100 metres away with Remote Headphones. This exciting new product gives you freedom to move around plus top quality sound.
    Price : $ 110.98
    请阅读以下购物者的信息，然后匹配购物者和他/她拟要购买的物品的广告：
    【小题1】Jane’s mother wants to fry some bread for their lunch but she found there’s no oil in the kitchen and ask Jane to buy some while shopping.
    【小题2】Jack’s girl friend, Helen, came to Beijing for further study on Chinese literature but she couldn’t find a suitable living place so she just wants to live together with someone else.
    【小题3】Maggie just bought a second-hand flat a month ago so she wants to buy some furniture for her new home and maybe she will go shopping on the coming Sunday.
    【小题4】Nathan’s father is retired from work and stays at home watching TV all day
    long so Nathan has decided to buy him something convenient when he watches TV.
    【小题5】Nelda, my English teacher, decided to have a tour in China during the coming summer holidays so he decided to buy something to be useful during his trip.

    查看答案和解析>>


    同步练习册答案