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1. a 9.1-percent drop in the annual average density of fine particulate matter (pm2.5) was seen in 74 major cities.

2. 201107/145539.shtml

3. whiteness, in this context, is more than just skin color. you could define it as membership in the “ethno-national majority,” but that’s a mouthful. what it really means is the privilege of not being defined as “other.”

4. 一些智能的床会让你有更好的睡眠质量和睡眠姿势，但也会让你变成一个检查配偶是否出轨的私家侦探。除了检测这个床垫是否舒适，它会在有其他人占用你的床的时候提醒你。

5. sc＝scene（n 风景），roll（n 卷）－卷着风景的画卷

6. indoors: the two-story stucco contemporary was built in 2005. the interior is an airy open space; white walls contrast with red tile floors. walls of sliding glass doors face live oaks and marshland on the wilmington river.

应用

1. song “beautiful china”(sha baoliang and xu qianya)

2. i am afraid to go out in the sun now because of the holes in the ozone. i am afraid to breathe the air because i don't know what chemicals are in it. 我现在害怕晒太阳，因为臭氧层出现了空洞。我现在害怕呼吸空气，因为我不知道那里有多少化学物质。

3. 伦敦——自2002年开设以来，“周六人物”(saturday profile)便旨在向《纽约时报》的读者介绍世界各地的人。读者可能从来没有听说过这些人，但他们过着有趣的生活，做过不同寻常的事情，或者刚刚有了一段非凡的经历。

4. barack obama went on the offensive over foreign policy in the third and final presidential debate, repeatedly accusing mitt romney of flip-flopping on major international issues but failing to deliver a killer blow to his opponent's resurgent campaign.

5. "protections that promote equality and diversity should not be conditional on someone's sexual orientation," he wrote. "for too long, too many people have had to hide that part of their identity in the workplace."

6. 在完成作业不久之后，孙轶萧就听到外面嘈杂的响声。

旧版特色

1. adolescent

2. 将第10题到14题的分数相加，计算自己在“社交抑制”维度的得分。

3. we will promote coordinated urban development above and below the ground, and begin construction on at least another 2,000 kilometers of underground utility tunnels in cities. a three-year initiative will be launched to remove the risk of flooding in highly vulnerable urban areas; and further progress will be made in the development of sponge cities. all these efforts will make our cities more attractive and function better.