【小题1】 picture quality has improved greatly with the development of flat-screen television, sound has taken a dive. The problem ss that televisions with slimmed-down screens have insufficient room for suitable speakers【小题2】(fit) to them, either at the back【小题3】in the frame (框). Such televisions are usually connected to【小题4】external sound system, such as a sound bar or a home-cinema system,【小题5】(make) their audio quality better.

The loudspeakers of early televisions were as big as the screen, but engineers have got good at making speakers smaller and putting them into【小题6】(tight) spaces. Sony is the first company【小题7】(develop) what it calls Acoustic Surface.

Unlike traditional ones, this screen gives off the light directly,【小题8】means it is able to vibrate (振动) more 【小题9】(flexible). This vibration is invisible to the viewer and does not affect picture quality. One beneficial consequence is that a program’s music【小题10】(broadcast) directly at the viewer instead of from the side. It is also possible to create stereo (立体的) effects by the sound’s point of origin across the screen.

A small village in Yunnan Province is 【小题1】 (wide) known as the Dai paper factory. There are nets for drying paper all over the village and inside villagers’ houses. Dai paper 【小题2】 (make) for over 800 years there up to now.

One of the best papermakers is Yan, who was already interested in Dai paper 【小题3】 an early age. 【小题4】 (teach) by his grandparents to be a papermaker at 16, Yan was quickly able to complete 【小题5】 production independently.

Unlike ordinary papermaking 【小题6】 trees need to be cut down, Dai paper is environmentally friendly. This is 【小题7】 its raw material is the recyclable bark of a kind of trees unique to the area. Dai paper’ production process is still used today. In a workshop, Yan demonstrated 11 different papermaking 【小题8】 (process) to us.

Although Dai paper 【小题9】 (carry) the culture and belief of the Dai people, the crafting of it is faced with great challenges. To address the problems, Yan improved Dai’s papermaking technology, thus saving production time and 【小题10】 (reduce) labor costs. And then he started teaching the villagers his new papermaking process for free.

This is a primary school in Finland. The students at the school are having a math class with their robot teacher. The “teacher” is 【小题1】 small, blue machine about 25cm high, Reuters reported. Whenever students have problems, it helps them very 【小题2】 (patient) and never gets bored.

“The robot can make students 【小题3】 (active) in class than usual. I see Elias as one of the 【小题4】 (tool) to get different kinds of practice and activities into the classroom,” a teacher told Reuters. So far the school 【小题5】 (introduce) four robot teachers, one of whom is a language teacher that can speak 23 languages and dance to music. “【小题6】 is necessary to encourage kids to come up 【小题7】 new ways to make use of technology in school life,” the head of the school 【小题8】 (add) in the interview. The robot teachers are used 【小题9】 (help) improve learning. This doesn’t mean that human teachers will lose their jobs. The robots can teach well, 【小题10】 they are not able to keep class in order. The school still needs human teachers.