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