5. The second paragraph mainly talks about_______.

A. Smart cars

B. a red"e-stop"button

C. Google self-driving cars

D. gas pedal or brake

【解析】选C。段落大意题。第二段主要描述谷歌无人驾驶汽车的样子、一些功能等。

6. The writer may agree that_______in the third paragraph.

A. Google's leaders paid enough attention to drivers'safety

B. Google didn't do enough experiment about the car

C. it is dangerous for a driver to drive a self-driving car

D. Google's leaders didn't pay enough attention to safety

【解析】选A。细节理解题。根据第三段第二句可知尽管谷歌的工人进行了长时间的实验, 但是公司的领导还是认为由人驾驶的汽车还是会出现事故。由此看来, 公司的领导关注更多的是司机的安全。

7. We can guess from the last paragraph that_______.

A. self-driving cars are too expensive

B. there will be more self-driving cars

C. there will be fewer self-driving cars

D. the government will stop Google's plan

【解析】选B。推理判断题。根据最后一段第一句可知现在谷歌研发的无人驾驶汽车正在许多城市的繁忙的街道上行驶着。这说明在将来会有更多的无人驾驶汽车。

Across the United States, there are several places where two independent towns grew together to become one city-but kept both their names.

Winston-Salem is one of them. It's a mid-sized city in what's called the Plateau(high land), between the Atlantic Coast and the inland mountains in the state of North Carolina. The Winston part is a relatively new place, founded early this century. It's home to the nation's biggest open air tobacco market.

The giant R. J. Reynolds Tobacco Company's headquarter is in Winston-Salem, and Winston is the name of one of Reynolds' best known cigarette brands. Fast-growing Winston soon surrounded the much older town, Salem, so in 1913, people in the area voted to combine them into a single place.

From a historical and tourist point of view, Salem, or Old Salem, as it's called today, is the interesting and unusual part of town.

Salem was founded in the 1700s by the Moravians. They spoke German, and their community was religiously based, with single men and single women living apart in separate dormitories. The Moravians greatly valued women's work and brainpower. In fact, one of the nation's oldest boarding schools for young women-the Moravians' Salem Academy founded in 1772-is still in operation.

Over the years, Salem lost its Moravians character. That all changed, though, when a nonprofit group began to rehabilitate the historic area. These days Old Salem is what's called a living history museum, with exhibits, music, and tours of 18th-century