spent more. "可知，当演奏古典音乐而不是流行音乐的时候，食客们会花更多的钱。spent more就是对题干中make more profit的语意转化。故选A项。

3．What does the last paragraph talk about?

A．Tips to attract more customers.

B．Problems restaurants are faced with.

C．Ways to improve restaurants' reputation.

D．Common misunderstandings about restaurants.

【答案】　D　主旨大意题。

根据最后一段首句中的things that you might expect to discourage spending-"bad"tables，crowding，high prices-don't necessarily可知，你可能认为会打消你消费的念头的东西--位置"不好"的桌位、拥挤和价格高--未必如此(指在某些人看来，这些不利因素未必不会带来利润的增加)。由此可知，作者认为这些对于餐馆的常见的观点是一种误解，故选D项。

B

(2019·郑州模拟)

Best Inventions

Sun Power

People who buy solar panels (嵌板)for their home hope to help the environment and save some money. But they end up with large metal boxes on their roof. Tesla，a car company，solved the problem. The solution is the Solar Roof. It is a series of tiles (瓦) made to look like traditional roofing material while using the power of the sun. Tesla developed it with SolarCity，a longtime provider of solar panels. It is now available to the public.

Talking Tech

Echo gives users the ability to talk to their tech. Apple's Siri and Microsoft's Cortana do that too. But in many ways，Amazon's version，Alexa，which is built into Echo，is more powerful. Alexa has grown since it was put on the market in 2014，and