题目内容：

    When athletes at the 2020 Tokyo Olympics collect their medals, they'll not only be wearing something that celebrates their sporting performance, but something that symbolizes lastingness. For both the 2020 Olympics and Paralympics, organizers aim to make all of the gold, silver, and bronze medals out of used electronics. This strong message about how to make use of e-waste has gotten a lot of Japan involved.

Starting in April 2017, the Japanese Olympic Committee began collecting old laptops, digital cameras, smartphones, and other abandoned electronics. The initiative(倡议）has achieved great success. Already, the quantity needed for bronze medals has been met, and they're in the homestretch for silver and gold medals, meaning the collection process can pack up at the end of March.

When looking just at the number of cell phones collected, the amount of waste is shocking. In a period of about 18 months, a little over 5 million smartphones were collected thanks to cooperation with NTT DOCOMO. Japan's largest mobile phone operator allowed the public to turn in phones at their shops, which counted a lot in the project’s success.

After being taken apart and sorted, the small electronics underwent a smelting process to extract(提炼）all the gold, silver，and  bronze elements. Thanks to this initiative, the worldwide struggle with e-waste will have a global platform. According to a study published by the United Nations University—44.7 million metric tons of e-waste were made in 2016. Only 20% of that was actually recycled. Unfortunately, this figure is set to rise significantly in the coming years, moving to 52.2 million metric tons by 2021. So while the Tokyo Olympics initiative might be just a drop in the bucket, it’s a good start in showing what the public can do if they're made more aware of the issue.

1.What can be learnt about Tokyo Olympics initiative from the passage?

A. E-waste in the world is increasing significantly.

B. It is easy to get elements needed from the used electronics.

C. Only producers of electronics participated in the project.

D. NTT DOCOMO contributed to the success of the project.

2.Which can best replace the underlined word “homestretch” in Paragraph 2?

A. starting period B. collection effort

C. final stage D. hard search

3.What influence does the Tokyo Olympics initiative have?

A. It offers an effective method to solve the problem of e-waste.

B. It shows the power of advanced technology in daily life.

C. It saves the expense spent in making all the medals.

D. It encourages the public’s involvement in dealing with e-waste.

4.What is the writer’s attitude to the Tokyo Olympics initiative?

A. Positive B. Negative

C. Ambiguous D. Indifferent