Japan is getting tough about recycling—and not in the paper and plastic kind of way. Recen

Japan is getting tough about recycling—and not in the paper and plastic kind of way. Recently, the country requires that all electronic goods—TVs, VCRs, stereos, and more—be recycled. But recycling will not beleft to consumers, instead, the devices will be sent to the original manufacturer for proper disposal.

The new law poses a few challenges to manufacturers who are now rushing to set up collection networks and perfecting techniques to disassemble and recycle older products.With an eye toward the future, they are also integrating easily recycled materials into new products. Plastics, a major component of most electronicproducts,pose a particular obstacle because their quality becomes worse and worse with age,losing strengthand flexibility even if reprocessed.NEC Corp. overcomes this problem by creating a plastics sandwich, in which the filling is 100 percent recycled plastic and the outer layers a mixture of 14 percent recycled material.The resulting plastic has sufficient strength and toughness for use as a case for desktop PCs. The company, in cooperation with plastic maker Sumitomo Dow, has also developed a new plastic, which engineers claim retains its mechanical properties through repeated recycling. NEC uses the plastic, which is also flame-retardant (阻燃的) in battery cases for notebook PCs.

Meanwhile, Matsushita Electric, maker of the Panasonic brand, is avoiding plastic in favor of magnesium (镁). Magnesium, says the company, is ideal for re cycling because it retains its original strength throughrepeated reprocessing. Matsushita has developed molding techniques to form. magnesium into the case for a 21-inch TV. Unfortunately, the magnesium case and energy-saving features make the TV about twice as expensive as an ordinary model.The company hopes, however, that increased use of magnesium will eventually bring prices down.

Choose correct answers to the question:

According to the present regulations of Japan, the recycling of paper and plastic will be the responsibility of______.

A.the government

B.the manufacturers

C.the consumers

D.the sellers

Which of the following is NOT the character of plastics?A.Most electronic products contain plastics.

B.It retains its original strength through reprocessing.

C.Recycled plastics can be integrated into new products.

D.Plastics will lose flexibility after a certain period of time.

According to the passage, the term “plastic sandwich” refers to_____.A.a kind of sandwich-shaped toy made of plastics

B.a kind of plastics with different integration in each layer

C.a kind of plastics with maximum strength and flexibility

D.a kind of plastics made of 100% recycled materials

In the passage, it is implied but NOT stated that_____.A.disposing the plastics is one of NEC Corp’s businesses

B.magnesium is an ideal material for the case of TV

C.21-inch TV with magnesium case isn’t very popular so far

D.magnesium must be better than the plastics

The author writes this passage in order to_____.A.inform

B.instruct

C.predict

D.persuade

请帮忙给出每个问题的正确答案和分析，谢谢！

Thermosetting plastics are generally better than thermoplastic plastics in toughness and impact resistance.

听力原文：M: Hey, Sophie! How's the course going? I heard that the architecture course is really tough this semester.

W: Yes, it's pretty hard work. I never seem to have any free time; I'm always in the library.

Q: Where is the probable place for this conversation?

(13)

A．In a restaurant.

B．On campus.

C．In the police station.

D．In the doctor's office.

According to the passage, which of the following statements is true of the process that discolors and toughens foods?

A．It takes place more slowly than glycosylation in the human body.

B．It requires a higher ratio of glucose to protein than glycosylation requires in the human body.

C．It does not require the aid of enzymes to attach glucose to protein.

D．It proceeds more quickly when the food proteins have a molecular structure similar to that of crystallin proteins.

According to the passage, which of the following statements is true of the process that discolors and toughens foods?

A．It takes place more slowly than glyeosylation in the human body.

B．It requires a higher ratio of glucose to protein than glycosylation requires in the human body.

C．It does not require the aid of enzymes to attach glucose to protein.

D．It proceeds more quickly when the food proteins have a molecular structure similar to that of crystallin proteins.