A) They cost little to make. B) They weren't very hygienic. C) They were extremely innovative. D) They helped keep teeth clean.
A) the stem of a toothbrush B) a part of a hog C) a special toothbrush D) an animal hair used to make a brush
A) false B) true
A) because people chewed them after using them B) because they were chewed on by animals C) because people chewed on them to help clean the teeth D) because they tasted better when chewed
A) It worked better than any toothbrush before it. B) It was vry popular when it was invented. C) It was cheaper than previous toothbrushes. D) It originally used animal hairs.
A) Test it on mosquitoes. B) Give it away to a variety of stores. C) Manufacture it in factories. D) Sew it into specific brands of clothing.
A) To indicate most people probably knew this fact already. B) To show readers why mosquitoes are annoying. C) To emphasize the importance of repellants. D) To highlight the need for an improved product.
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) 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 |