E【语篇导读】森林火灾预防有助于减少损失，确保生态平衡。森林火灾的危害不言而喻，但控制的燃烧既有助于控制火灾损失，还有助于保持生物多样性。

61. A  主旨大意题。文章从对林火的预防和发生后如何控制两方面做了介绍，所以A项最能全面概括文章内容。
62. D  细节理解题。从文章第一段最后一句“…control the spread of a wildfire, firefighters usually create a control line by removing all fuel from an area so that the fire cannot travel across it.”得知。
63. C  细节理解题。从第二段“…and thus, prevent the spread of forest fires to a vast area”得知。
64. B  细节理解题。从第二段“controlled burns can also help maintain biodiversity”以及最后一段“and many plants depend on the heat and smoke generated by wildfires for their growth and reproduction”得知。
65. B  推理归纳题。该段介绍了林火的危害：affect climate and weather，increase the level of greenhouse gases，cause extensive damage to the ecosystem等；但也有积极的一面：they are also an important part of the ecosystem。所以B项客观得对forest fires做了表述。
66. Scientific advances will enable humans to live longer.
67. achieve/accomplish/reach that goal
68. Advances in using genes and nanotechnology
69. Whether people can live from 120 to 180 years.
70. Whether we could be healthy enough to have a good quality of life.

I’m Li Hua from Xinhua Middle School. Now I’d like to share my experience in practicing speaking English.
Firstly, I’m always confident and brave. I seize every opportunity to speak, not afraid of making mistakes which may embarrass me. Secondly, I find it of great benefit to take part in English corners, where I make many friends. By talking with them, my oral English has improved a lot. Finally, some English programs like CCTV-9 contribute to my progress in the ability to speak fluent English. Not only am I kept informed of the current events going on both at home and abroad, I also learn to speak with standard pronunciation and intonation.
Just as the saying goes, practice makes perfect. Keep speaking and your hard work will finally be rewarded.