A) They weren't very hygienic. B) They helped keep teeth clean. C) They cost little to make. D) They were extremely innovative.
A) a part of a hog B) the stem of a toothbrush C) an animal hair used to make a brush D) a special toothbrush
A) true B) false
A) because people chewed them after using them B) because they were chewed on by animals C) because they tasted better when chewed D) because people chewed on them to help clean the teeth
A) It originally used animal hairs. B) It was vry popular when it was invented. C) It worked better than any toothbrush before it. D) It was cheaper than previous toothbrushes.
A) Manufacture it in factories. B) Sew it into specific brands of clothing. C) Test it on mosquitoes. D) Give it away to a variety of stores.
A) To indicate most people probably knew this fact already. B) To emphasize the importance of repellants. C) To highlight the need for an improved product. D) To show readers why mosquitoes are annoying.
A) The ingredients in standard bug repellants B) the type of chemical used in the patch C) the reason why mosquitoes bite people D) the way the patch has been tested with the public
A) Avoid Chemicals in Common Repellants B) A Safe Solution to Pesky Mosquitoes C) Mosquitoes are Pesky D) Carbon Dioxide: Perfume of the Mosquito
A) true B) false |