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