1. Cats hunt not only by night but also daily. 2. Adobe is used throughout the Southwest to make ovens and bricked. 3. Both circular or longitudinal muscles occur in the walls of the throat. 4. A sixteenth-century navigator used an astrolabe…

1. The largest of all the herd animals are the musk ox. 2. All of the hoofed mammals walks on the tips of their toes. 3. No one are quite sure how the electricity that causes lightning builds up. 4. Like desert plants, the plants of the tundra has to be…

1. An acre originally represented the area that a yoke of oxen _____ in a single day. a. a plow b. to plow c. plowing d. could plow 2. _____…

1. Fossils demonstrate _____ from land-dwelling arthropods. a. insects developed b. how insects developed c. how the development of insects d. the development of insects 2. A course syllabus _____…

Vast flows of information is carried on hair-thin fiber optic cables.   The crafting of fine violins has been proceeding for several century as a secret art.   Linguistic conflicts…

199. ________ lived on Earth for nearly 150 million years. A. Dinosaurs B. Dinosaurs who C. If dinosaurs D. Since dinosaurs 200. Early printers arranged type into ________ a small,…

189. On December 17, 1903, the Flyer ________near Kitty Hawk, North Carolina, with Orville Wright as pilot. a. took off b. it took off c. taking off d. took it…

169. Although knives and forks ________ prehistoric origin, spoons are relatively new. a. are b. they are c. are they d. which are 170. Neptune’s ________ the planet in the…

149. ________ the second most common metal in the Earth’s crust, and it always occurs in combination with other substances. a. Iron b. Iron is c. With iron d. With…

Water stored behind a dam can used to drive turbines.   Our universe may continue to expand as it gets colder, empty, and deader.   Every form of matter in…