题目内容
10．Quite a few people used to believe that disaster________ if a mirror was broken．（ ）| A． | was sure of striking | B． | was sure of having struck | ||
| C． | was sure to be struck | D． | was sure to strike |
分析 过去很多人认为，如果一个镜子被打碎的话，灾难就降临到头上
解答 答案：D 考查动词不定式．先排除A、B项，be sure of"有把握/自信"，主语为人，而a disaster"灾难"，非人，故A、B已错；是"灾难降临"，而非"被降临"，用动词不定式的主动形式，排除C项，故选D项．
点评 不定式具有动词的特征，同时也有名词、形容词和副词的特征． 动词不定式在句中可以作主语、宾语、表语、定语和状语，还可用在复合结构中，而且有完成式、进行式、完成进行式和否定形式．弄清楚不定式的各种表达形式的含义和在句中所作的成分，然后选择最符合题意的选项．
练习册系列答案
新课标阶梯阅读训练系列答案
相关题目
20．Wayne Rooney，a famous football player，regretted being too careless to score the goal， that the same mistake would not be repeated．（ ）
| A． | determining | B． | having determined | ||
| C． | to determine | D． | determined |
2．Green is not always referring to the color．In some cases，it is the term used for being environmentally friendly．If you've been looking to replace your furniture，consider going green because environmentally friendly furniture offers many benefits．Here are a few tips to get you started on your hunt for the perfect eco-friendly furniture．
First，environmentally friendly furniture isn't harmful to your health．Also its manufacturing process doesn't cause damage to the environment in any way．Besides，by purchasing eco-friendly products，you prevent deforestation and global warming to some extent in your own way．You do your part in protecting the environment．Environmentally friendly furniture is cost-effective as well．
The materials that are used in furniture are what make them green．Materials can be good for the environment either because they are materials that are considered renewable resources or they are all natural．A lack of chemicals and toxins（毒素） in green furniture also means it is a better choice for the environment．It may be hard to imagine that a sofa or a table could actually be a green product but they really can be depending on what they're made of．
There are a lot of renewable sources that manufacturers could use when building the furniture，so you should be keeping an eye out for them．Bamboo can be an excellent replacement for wood and can also replace plastics and metals in some furnishing．Cotton is a soft fabric that is safe for the environment and it can be replenished（补充） often．Hemp is also a renewable source that can be used for fabric and twine．
Recycled materials also can be made into green furniture．Metals can be recovered and remade into new things such as frames and foundations for sofas．Recycled plastic can also be made into furniture such as tables and chairs．Touching up old furniture instead of buying new items is a very cheap way to be green．Yard sales and second-hand stores sell furniture too and buying the used means new things won't be made，so no more damage has to happen to the earth．
Therefore，when you want to hunt for the perfect environmentally friendly furniture，you should try to know the type of materials which are used in building the furniture．
First，environmentally friendly furniture isn't harmful to your health．Also its manufacturing process doesn't cause damage to the environment in any way．Besides，by purchasing eco-friendly products，you prevent deforestation and global warming to some extent in your own way．You do your part in protecting the environment．Environmentally friendly furniture is cost-effective as well．
The materials that are used in furniture are what make them green．Materials can be good for the environment either because they are materials that are considered renewable resources or they are all natural．A lack of chemicals and toxins（毒素） in green furniture also means it is a better choice for the environment．It may be hard to imagine that a sofa or a table could actually be a green product but they really can be depending on what they're made of．
There are a lot of renewable sources that manufacturers could use when building the furniture，so you should be keeping an eye out for them．Bamboo can be an excellent replacement for wood and can also replace plastics and metals in some furnishing．Cotton is a soft fabric that is safe for the environment and it can be replenished（补充） often．Hemp is also a renewable source that can be used for fabric and twine．
Recycled materials also can be made into green furniture．Metals can be recovered and remade into new things such as frames and foundations for sofas．Recycled plastic can also be made into furniture such as tables and chairs．Touching up old furniture instead of buying new items is a very cheap way to be green．Yard sales and second-hand stores sell furniture too and buying the used means new things won't be made，so no more damage has to happen to the earth．
Therefore，when you want to hunt for the perfect environmentally friendly furniture，you should try to know the type of materials which are used in building the furniture．
| Environmentally friendly furniture | ||
| （71）Benefits/Advantages | ●It is （72）harmlessto your health ●Its manufacturing process （73）avoidsdamaging the environment in any way ●It prevents deforestation and global warming to some extent ●It helps you（74）savesome money as well | |
| Requirements of the materials | ●The materials should be renewable and natural ●The materials （75）containfewer chemicals and toxins | |
| Materials often used in green furniture | Renewable materials | ●Bamboo can be used to（76）replacewoods，plastics and metals ●Cotton is a soft fabric which can be often replenished ●Hemp is also a good material |
| Recycled materials | ●Metals can be recovered and （77）reusedto make new things（78）like frames and foundations for sofas ●Recycled plastics can be made into tables and chairs ●Purchasing（79）second-hand/used/oldfurniture is also a good idea | |
| Conclusion | It is（80）important/necessary/betterto know the type of materials used in the furniture while you're hunting for the perfect eco-friendly furniture． | |