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