题目内容：

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Trash classification has been a hot topic around China for the past few months, as it is greatly related with land-saving, environmental-protecting, and resource-reusing. This summer, residents in Ningbo are required to separate trash into four groups.

A. It refers to the waste that can be reused or be processed(加工) into raw materials, mainly including waste paper, plastics, metals, glass, textiles(织物) and so on. Some waste should be cleaned and packed neatly before being put into the bins.

B. Also known as wet garbage, it mainly refers to the organic household waste that comes from domestic and agricultural markets, including leftovers, fruit peels and shells, waste food seasonings, residues and defoliation(残渣落叶), etc.

C. Also known as dry garbage, mainly includes disposable paper cups, toilet paper, tissue paper, wet tissue paper, diapers, cigarette butts, cinder dust and other wastes which are difficult to recycle and have no recycling value at present.

D. Such waste refers to the substances that cause direct or potential(潜在的) harm to human health or natural environment. It mainly includes waste rechargeable batteries, waste fluorescent lamps, energy-saving lamps, expired drugs, waste pesticides and waste paint barrels.

1.Recyclable waste ________

2. Kitchen waste ________

3.Harmful waste ________

4.Other waste________

5.Which of the following is NOT the advantage of trash classification?

A.Improving the use of land.

B.Saving food for poor children.

C.Using the resources effectively.

D.Protecting the environment.