A) They were extremely innovative. B) They helped keep teeth clean. C) They weren't very hygienic. D) They cost little to make.
A) a part of a hog B) a special toothbrush C) the stem of a toothbrush D) an animal hair used to make a brush
A) false B) true
A) because people chewed them after using them B) because people chewed on them to help clean the teeth C) because they tasted better when chewed D) because they were chewed on by animals
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) Give it away to a variety of stores. C) Test it on mosquitoes. D) Sew it into specific brands of clothing.
A) To emphasize the importance of repellants. B) To highlight the need for an improved product. C) To indicate most people probably knew this fact already. D) To show readers why mosquitoes are annoying.
A) the way the patch has been tested with the public B) the type of chemical used in the patch C) The ingredients in standard bug repellants D) the reason why mosquitoes bite people
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 |