B. controlling the release of carbon dioxide
C. making the soil heat resistant
D. cutting off the oxygen supply
5． D。分析：該題可以借助常識直接判斷D是答案，注意被選項中出現(xiàn)的核心詞（黑體部分內(nèi)容）也可以借助原文：
Ultimately, the remote sensing and other techniques should allow scientists to estimate how much carbon dioxide theses fires are emitting.（劃線句句意表明A和B都是控制地下火的方法） One suggested method of containing the fires was presented by Cary Colaozzi, of the engineering firm Goodson, which has developed a heat-resistant grout（水泥漿） (a thin mortar （灰泥）used to fill cracks and crevices（裂縫）,) which is designed to be pumped into the coal fire to cut off the oxygen supply. 該劃線結(jié)構(gòu)的含義表明“使用隔熱的水泥漿的最終目的也是為了切斷氧氣的供應(yīng)”，因此判斷D是答案。該題考察考生的推斷能力。
Passage 2
Pushbike（自行車） Peril （危險）
Low speed bicycle crashes can badly injure--or even kill--children if they fall onto the ends of the handlebars so a team of engineers is redesigning the humble handlebar in a bid to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that mol-e than a third were caused by bicycle accidents．”the task was to identify how the injuries occurred and come up with some countermeasures．” she says.
By interviewing the children and their parents，Arbogast and her team were able to
reconstruct many of the accidents and identified a common mechanism responsible for serious injures. They discovered that most occur when children hit an obstacle at a slow speed，causing them to topple over. To maintain their balance they turn the handlebars through 90degrees——but their momentum forces them into the end of the handlebars The bike then falls over and the other end of the handlebars hits the ground，ramming it into their abdomen.
The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact，The group hopes to commercialize the device，which should add only a few dollars to the cost of a bike. “But our task has been one of education because up until now, bicycle manufacturer were unaware of the problem，”says Arbogast.
C. making the soil heat resistant
D. cutting off the oxygen supply
5． D。分析：該題可以借助常識直接判斷D是答案，注意被選項中出現(xiàn)的核心詞（黑體部分內(nèi)容）也可以借助原文：
Ultimately, the remote sensing and other techniques should allow scientists to estimate how much carbon dioxide theses fires are emitting.（劃線句句意表明A和B都是控制地下火的方法） One suggested method of containing the fires was presented by Cary Colaozzi, of the engineering firm Goodson, which has developed a heat-resistant grout（水泥漿） (a thin mortar （灰泥）used to fill cracks and crevices（裂縫）,) which is designed to be pumped into the coal fire to cut off the oxygen supply. 該劃線結(jié)構(gòu)的含義表明“使用隔熱的水泥漿的最終目的也是為了切斷氧氣的供應(yīng)”，因此判斷D是答案。該題考察考生的推斷能力。
Passage 2
Pushbike（自行車） Peril （危險）
Low speed bicycle crashes can badly injure--or even kill--children if they fall onto the ends of the handlebars so a team of engineers is redesigning the humble handlebar in a bid to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that mol-e than a third were caused by bicycle accidents．”the task was to identify how the injuries occurred and come up with some countermeasures．” she says.
By interviewing the children and their parents，Arbogast and her team were able to
reconstruct many of the accidents and identified a common mechanism responsible for serious injures. They discovered that most occur when children hit an obstacle at a slow speed，causing them to topple over. To maintain their balance they turn the handlebars through 90degrees——but their momentum forces them into the end of the handlebars The bike then falls over and the other end of the handlebars hits the ground，ramming it into their abdomen.
The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact，The group hopes to commercialize the device，which should add only a few dollars to the cost of a bike. “But our task has been one of education because up until now, bicycle manufacturer were unaware of the problem，”says Arbogast.