10．聽第12段材料，回答第13至15小題．聽之前你有5秒鐘時間閱讀相關小題，聽完后你有5 秒鐘時間作答． 13．Why do they collect the rubbish along the river？ A．To stop the river from being polluted． B．To sell it for money． C．To see the river every day． 14．How many volunteers do they have？ A.10． B.14． C.24． 15．When do they do the volunteer work？ A．At 8：30 every morning． B．After lunch at noon． C．After dinner every evening．
4．What's the name of the new product？ A．Colored pencils． B．Chocolate pencils． C．Toy pencils． 17．What can you do with this kind of pencils？ A．Write and draw． B．Eat． C．Both A and B． 18．What do the pencils taste？ A．A little hot． B．Sweet． C．Strange． 19．How much is one of the pencils？ A．Twenty dollars． B．Two dollars． C．Twelve dollars． 20．Who may the pencils be suitable for？ A．The children who enjoy biting（咬） the ends of pencils． B．The children who like eating chocolates． C．The children who like drawing．
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