(C)    We need flour when we bake food. But do you know that flour can blow up easily? On June 27, 2015, at a party in a water park in Taiwan, people used the colored flour. However, the stage caught on fire suddenly and burned down in seconds. People screamed and ran for their lives through fire. More than five hundred people got hurt, and fifteen people died.　　Usually, a bag of flour wouldn’t burn by itself, but if you throw a lot of flour into the air and light it, the flour will explode. When you throw it in to the air, the surface area will become larger. The larger the surface area becomes, the more easily it will blow up. Other powders, like sugar and milk powders are just as dangerous as flour. Be careful when you use them, and remember to keep powders away from fire.*screamed 尖叫 surface表面 powder粉末
【題組】45. What does the word explode mean?
(A) Bake.　
(B) Throw.　
(C) Hurt.　
(D) Blow up.