1. _____ first settled the Hawaiian Islands between A.D. 300 and 750.
A. The Polynesians
B. The Polynesians arrived
C. Because of the Polynesians
D. It was the Polynesians
2. In 1066, a bright comet_____ in the sky attracted much attention.
A. was appearing
B. appears
C. it appeared
D. appearing
3. In some daguerreotype cameras, _____ through a hole in the back of the box.
A. the object’s view
B. the object was viewed
C. from the view of the object
D. viewed the object
4. In the Stone Age, stone tools _____ with other rock materials.
A. polishing
B. they polished
C. for polish
D. were polished
5. The first steamship to cross the Atlantic _____ Savannah, in 1819.
A. was the
B. it was the
C. the
D. in it the
6. The Earth’s plates meet each other at cracks in the Earth_____ faults.
A. were called
B. calls
C. called
D. it was called
7. The first plant-like organisms probably_____ in the sea, perhaps three billion years ago.
A. life
B. living
C. lived
D. it was living
8. In male pattern baldness, ______ strongly influences the degree of hair loss.
A. heredity
B. inherited
C. inherits
D. heredity has
9. In Watch the Skies, Curtis Peebles ______ attempt to explain America’s belief in flying saucers.
A. makes a fascinating
B. making a fascinating
C. fascination with making
D. fascination made a
10. The irregular coastline of ______ a succession of bays and inlets, with the hook of the Cape Cod peninsula in the southeast.
A. Massachusetts
B. Massachusetts is
C. Massachusetts it is
D. Massachusetts on
11. I forgot my coat______ I got very cold.
A. then
B. so
C. later
D. as a result
12. ______ arrived at the library, he started to work immediately.
A. The student
B. When
C. He
D. After the student
13. A spacecraft is freed from friction ________launched into space.
A. it
B. it is
C. after is
D. after it is
14. _____with their surroundings, or they hide in crevices for protection.
A. Lobsters
B. Lobsters blend
C. Lobsters blending
D. Because lobsters blend
15. _____a ball-and-socket joint, the elbow is a simple hinge joint.
A. While the shoulder
B. While the shoulder is
C. The shoulder is
D. The shoulder
16. A car has several sections with moving parts, _____of those parts is essential.
A. good lubrication
B. well lubricated
C. and good lubrication
D. and well lubricated
17. Bears cannot see well _____ small eyes.
A. bears have
B. because having
C. because they have
D. because of bears
18. _____ at the Isthmus of Panama, so animals were able to migrate between North and South America.
A. A land bridge existed
B. When a land bridge existed
C. A land bridge
D. With a land bridge
19. _____ mostly made of granite, it also contains some human-made materials.
A. The Empire State Building
B. The Empire State Building is
C. Although the Empire State Building is
D. Although the Empire State Building is built
20. Pressure differences make the eardrum vibrate_____ the ear.
A. enters the sound waves
B. as sound waves
C. sound waves enter
D. as sound waves enter
21. An optical microscope magnifies as much as 2,000 times, but an electron microscope_____ as much as a million times.
A. magnifying
B. it magnifies
C. can magnify
D. magnify it
22. If scientific estimates are accurate, _____ with the Earth about 20,000 years ago.
A. the Canon Diablo meteorite collided
B. the collision of the Canon Diablo meteorite
C. the Canon Diablo meteorite colliding
D. colliding the Canon Diablo meteorite
23. _____ of the Pueblo Indians centered on intensive agriculture.
A. The economic activity
B. Because the economic activity
C. The economy was active
D. When the economic activity
24. In popular terminology, any long snowstorm with_____ is called a blizzard.
A. the amount of wind is large
B. a large amount of wind
C. it is very windy
D. very windy
25. Nuclear power can be produced by fusion, _____ produced by fission.
A. it can also be
B. it can also
C. and it can also be
D. and it can also
26. _____, igneous rocks may be changed into gneisses.
A. The temperature is high
B. If the temperature is high
C. High temperatures
D. If high temperature
27. In 1905, Henry Flagler_____ his plans to extend his Florida East Coast Railway out across the sea to Key West
A. it was announced
B. announcement
C. the announcement of
D. announced
28. The sound_____ from a vibrating object will be high or low depending on the number of vibrations.
A. comes
B. it is coming
C. is coming
D. coming
29. During the late 1880s, urban streetcars were electrified through _____ large motors.
A. they used
B. used
C. the use of
D. when they used
30. ____ almost 274 square miles, but 96 percent of the park is under water.
A. Although Biscayne National Park encompasses
B. Biscayne National Park encompasses
C. Biscayne National Park encompassing
D. Biscayne National Park
31. Legislation ____ in 1916 and 1917 gave the Wilson administration authority to intervene in the national economy if it proved necessary.
A. it was passed
B. was passed
C. passed
D. passes
32. Because a family of birds set up housekeeping in Joel Chandler Harris’s mailbox when the birds were in need of a place to stay, ____ the Wren’s Nest.
A. the home was named
B. so the home was named
C. naming the home
D. the home’s name
