with thermometer and mark that on straw.5. Put bottle in pot of hot tap water, wait until water... happened?What happened?You now have calibrated (标定) your bottle thermometer with two known temperatures.You ……

PUT a sensitive thermometer in a jar and close the cover. Wait five minutes and record the temperature. Remove the thermometer from the bottle. Soak half of asteel wool pad(钢丝球) in vinegar for one ……

Soda worldA lot of people enjoy drinking a bottle of soda on a hot summer day. But have you ever considered making soda on you own? Even if you don’t have the equipment at home, you can test out ……

) is to turn small dogs into “soda drinks”. People tell their dogs to sit upright (竖直), place a bottle..., the animal looks like a bottle of soda. Some black dogs look like cola. This is easy to do yourself ……

WHAT you’ll need: an empty plastic (塑料的) soda bottle.What to do: Cut the bottle in half. Fill the bottom-part half bottle with hot water halfway to the top. Turn the top-part half bottle upside down ……

WHAT you'll need: an empty plastic (塑料的) soda bottle.What to do: Cut the bottle in half. Fill the bottom-part half bottle with hot water halfway to the top. Turn the top-part half bottle upside down ……

soda water 汽水 coffee 咖啡Coke 可口可乐 yogurt 酸奶 a cup of tea 一杯茶a bottle of water 一瓶水a glass of milk 一杯牛奶The glass is full of water. 杯子里装满了水。The glass is empty. 杯子是空的。 ……

changes will these cool inventions bring to our lives? Let’s take a look.1、 No-touch thermometer (温度计)Want to take your body temperature? Usually you need to put a thermometer in your armpits (腋下 ……

. Is this really the case? It’s true that if you drop a pack of Mentos candy into a 2-liter bottle of diet coke, the candy will react with the carbon dioxide in the soda to create a lot of foam (泡沫 ……

树叶是会“呼吸”的。树叶是会“呼吸”的。    3. Stand in front of mirror with bottle and suck (吮吸) steadily on straw.3. Stand in front of mirror with bottle and suck (吮吸) steadily ……

树叶是会“呼吸”的。树叶是会“呼吸”的。  3. Stand in front of mirror with bottle and suck (吮吸) steadily on straw.3. Stand in front of mirror with bottle and suck (吮吸) steadily on straw.4 ……

可爱的笑脸体温计！A THERMOMETER (体温计) can tell if you have a fever by showing your body temperature. This thermometer shows “faces”. A smile means you are healthy. If you get a sad face, you need to see ……

Using a food thermometer (温度计) is the only sure way to know if your food has been heated enough to kill bacteria. ……

. No-touch thermometer (温度计)Want to take your body temperature? Usually you need to put a thermometer... thermometers. Users can simply put the thermometer 2.5 cm from a patient’s forehead. Then they press ……

show how a volcano erupts (爆发),” the others agreed.4. So, we got an empty soda (苏打水) bottle. We molded dough (包裹上面团) around it. We tried to make it pretty.4. So, we got an empty soda (苏打水) bottle. We ……