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