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