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A company in San Francisco, California, has found a way to turn used plastic bottles into women's shoes.

Every day, more than 60 million of plastic bottles are thrown away in America. Many of the plastic bottles end up in landfills or are burned with other waste products. A San Francisco start-up company called Rothy's, however, turns this plastic waste into environmentally friendly shoes. Roth Martin is the company's co-founder. He explains how they turn plastic into soft material for your feet. They take the plastic, clean it, and break it down into small pieces. Then they press it through a device that makes soft fibers. Those fibers are then combined, or knit together. This is done by a three-dimensional knitting machine. It is designed to reduce waste while making the shoes.

Rothy's shoes are made from recycled plastic water bottles. The fibers are knit together into a fabric. The outer sole on the bottom is made from environmentally friendly rubber. The knitted fabric and the inner part of the shoe are then attached to the shoe's outer part, called the sole. This outer sole is also made from environmentally friendly material: responsibly sourced no-carbon rubber.

Rothy's shoes are sold online. They are flat shoes, with either a rounded or pointed toe. They come in different colors and designs. After American actress Gwyneth Paltrow discovered them last year, the demand for the shoes grew.

Martin says, “There is no shortage of material to fill that demand. We are not going to run out of water bottles any time soon. So we have an endless supply of material.”

For now, the shoes are only available to be shipped in the United Sates, However, the company says it will add international shipping in the near future.

1£®The environmentally friendly shoes are made            .

A£®up of two parts                      B£®from used plastic

C£®to meet the market's demand          D£®by a traditional machine

2£®What is Martin's attitude towards the future of the shoes?

A£®Pessimistic.     B£®Indifferent.     C£®Optimistic.      D£®Concerned.

3£®What is the purpose of writing the passage?

A£®To describe the process of making shoes.

B£®To advertise a new kind of shoes.

C£®To stress the importance of environmental protection.

D£®To introduce a new way of recycling plastic waste.