1. Typical of the grassland dwellers of the continent is the American antelope, or pronghorn., f- d9 x& f# @3 S% C0 ]
2. Of the millions who saw Haley‘s comet in 1986, how many people will live long enough to see it return in the twenty-first century. 2 t: L3 A1 F8 ^, c8 R 3. Anthropologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions.5 y4 j. w% m/ G$ f8 a! K
4. Because of its irritating effect on humans, the use of phenol as a general antiseptic has been largely discontinued.. A$ i- a4 o+ ^6 o% ~& X1 |/ N
5. Insgroupsto remain in existence, a profit-making organization must, in the long run, produce something consumers consider useful or desirable. 3 u' O G- e0 D! p; c7 J 6. The greater the population there is in a locality, the greater the need there is for water, transportation, and disposal of refuse. & e( H8 \9 d; W0 ` 7. It is more difficult to write simply, directly, and effectively than to employ flowery but vague expressions that only obscure one‘s meaning. 0 c/ i% J4 x2 @ 8. With modern offices becoming more mechanized, designers are attempting to personalize them with warmer, less severe interiors.6 f% N, K% w7 |9 n" ^
9. The difference between libel and slander is that libel is printed while slander is spoken.1 U7 D8 y7 T% k% F% k) f" n
10. The knee is the jointswheresthe thigh bone meets the large bone of the lower leg. C& }2 g0 x% W- h
11. Acids are chemical compounds that, in water solution, have a sharp taste, a corrosive action on metals, and the ability to turn certain blue vegetable dyes red. % D4 i4 J T( E 12. Billie Holiday‘s reputation as a great jazz-blues singer rests on her ability to give emotional depth to her songs. 8 @$ |( b9 k6 l$ l7 S/ R 13. Essentially, a theory is an abstract, symbolic representation of what is conceived to be reality. # x2 r. ^: v# r" u& o2 \ 14. Long before children are able to speak or understand a language, they communicate through facial expressions and by making noises. 8 ]; A8 G5 }7 b4 x: o 15. Thanks to modern irrigation, crops now grow abundantly in areasswheresonce nothing but cacti and sagebrush could live.4 z! x( D% {2 E! s% g. \
16. The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them. 3 p/ X# y6 x0 w+ b# E; M/ v 17. Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others.1 }* g! ~- J1 D4 T: z* `2 i. i
18. Fungi are important in the process of decay, which returns ingredients to the soil, enhances soil fertility, and decomposes animal debris. 8 r# Y2 F9 j0 N' N/ J6 d 19. When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time. / }% x7 ?( H H! ^) i 20. Although pecans are most plentiful in the southeastern part of the United States, they are found as far north as Ohio and Illinois.