VOA慢速英语:Can Burnt Toast Give You Cancer?

crispy – adj. appealingly crunchy

starch – n. a substance that is found in certain foods (such as bread, rice, and potatoes) : starchy – adj. containing, consisting of, or resembling starch

acrylamide – n. an amide C3H5NO that is derived from acrylic acid, that polymerizes readily, and that is used in the manufacture of synthetic textile fibers

exposure – n. the condition of being subject to some effect or influence : expose – v. to cause (someone) to experience something or to be influenced or affected by something

occasional – adj. happening or done sometimes but not often : not happening or done in a regular or frequent way

calorie – n. a unit of heat used to indicate the amount of energy that foods will produce in the human body

hazard – n. a source of danger