→ b 215. The famous aviator Chales Lindbergh was a early supporter of rocket research. a. famous aviator b. a c. supporter d. rocket research → b 216. Cholesterol help the body by making hormones and building cell walls, but too much cholesterol can cause heart problems. a. help b. by making c. too much d. can cause → a 217. Luther Burand was a pioneer in the process of graft immature plants onto fully mature plants. a. a pioneer b. graft c. fully d. plants → b 218. With its compound eyes, dragonflies can see moving insects approximately 18 feet away. a. its b. moving c. approximately d. feet → a 219. An X-ray microscope enables a person to see on solid materials such as metal and bone. a. enables b. on c. such as d. bone → b 220. The United States has a younger population as most other major industrial countries. a. has b. as c. other d. countries → b 221. Before the invention of the printing press, books have been all printed by hand. a. Before b. the printing c. have been d. by → c 222. As the Asian economic miracle spreads throughout the Pacific, wage increases everywhere is affecting millions of consumers. a. As b. spreads c. is d. millions → c 223. The surface of the tongue covered with tiny taste buds. a. the b. covered c. tiny d. buds → b 224. Cosmic distance is measured on light-years. a. Cosmic b. is c. on d. years → c 225. A million of tourists from all over the world visit New York every day. a. A b. of c. all over d. visit → b 226. Whereas Earth has one moon, planet call Mars has two small ones. a. Whereas b. has c. call d. ones → c 227. An ardent feminist, Margaret Fuller, through her literature, asked that women be given a fairly chance. a. through b. that c. be d. fairly → d 228. No longer is scientific discovery a matter of one person alone working. a. No b. is c. matter of d. alone working → d 229. The scientific method consists of forming hypotheses, collect data, and testing results. a. scientific b. consists of c. collect d. results → c 230. All data in computer are changed into electronic pulses by an input unit. a. in computer b. into c. by d. unit → a 231. The basic law of addition, subtraction, multiplication and division are taught to all elementary school students. a. law b. division c. taught d. school → a 232. A largely percentage of Canadian export business is with the United States. a. largely b. of c. is d. with → a 233. The famous Jim Thorpe won both the pentathlon or decathlon in the 1912 Olympic Games.