D．answer people's questions

A　解析：细节理解题。根据第一段最后一句The Swedish furniture company's "future­living" research lab...is conducting a survey to understand what people want when it comes to smart furniture.可知，宜家公司开展这一调查的目的是了解人们对于智能家具的需求。

2．What does the underlined word "ubiquitous" in Paragraph 2 mean?

A．Beautiful.　　　　　 B．Common.

C．Normal. D．Environmental.

B　解析：词义猜测题。联系画线词后一句．..products ranging from smart electrical outlets(插座) to smart smoke alarms are flooding the market可知，智能家居产品涌向市场，说明面向家庭的智能科技愈加普遍，可推测"ubiquitous"意为"普遍的"，故选"Common"。

3．What does Paragraph 3 mainly talk about?

A．The differences between robot­like and human­like assistants.

B．What form of AI assistants people want.

C．What kind of friends people want.

D．The popular robots on the market.

B　解析：段落大意题。根据第三段Most participants wanted a more human­like form of virtual(虚拟的) assistant... Few wanted a religious form of AI.可知，该段主要在讲人们对于人工智能助手的类型要求。

4．Which of the following products are from Ikea?

A．Smart sofas that can speak to you.

B．Smart beds that can track your daily movements.

C．Wireless charging cars.

D．Rustless bikes without chains.

D　解析： 细节理解题。 根据文章最后一段In addition to wireless charging tables and chainless bikes that never rust(生锈)．.. smart kitchens that can cook the best meals.可知，选项中只有无链条不生锈自行车来自宜家，故选"Rustless bikes without chains."。

One day，I received a call from a colleague.He was about to give a student a zero for his answer to a physical problem，while the student claimed a perfect score.I was elected as their arbiter(仲裁人)．I read the examination problem，"Show how it is possible to determine the height