2013高考英语（阅读理解）倒计时冲刺50天（5）及答案
阅读理解技法指导
3．主旨大意题
主旨大意题常见的命题方式有以下几种：
(1)The best title/headline for this passage is ______.
(2)The passage(or the first paragraph)is mainly about ______.
(3)What is the main idea/topic/purpose/subject of the passage?
(4)Which of the following titles best summarizes the main idea of the passage?
(5)The passage chiefly discusses/deals with ______.
(6)Which of the following best states the theme of the passage?
(7)The passage mainly tells us that ______.
(8)Which of the following can best sum up the passage?
(9)What's the best/most suitable title of this text/passage?
如：(2012·湖南高考，C篇)
Harvard researchers have created a tough，lowcost，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 onetime products such as plastic bags，or shortlived 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
