In the text below some words are missing. Drag words from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.
下面的文本缺了一些词。请把词框里的词拖到文中合适的位置；要撤销选择，把词拖回文本下方的词框即可。
Mercury is not found in many common products that we buy because it can be very dangerous. The most common products that mercury are batteries, powerful outdoor lights, disinfectants and thermometers, which are used to measure our body's temperature. It can also be found in barometers, which are used to measure air pressure and changes in weather, and thermostats, which the temperature of buildings, Mercury can also be found in printer and photocopy toners.
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