1)choose the right answer 

1. postal service was almost nonexistent in the colonies.
2. there were about twenty-two colonial newspapers by 1775.
3. phosphors are used in fluorescent lamps, television tubes, and other devices.
4. the tips of some undersea mountains from islands in the middle of the ocean.
5. three types of fish: jawless fish, cartilaginous fish, and bony fish.
6. it is impossible to stop yourself from blinking except for a short period to time.
7. it takes the sitka spruce a hundred years to grow eleven inches.
8. mountaineering as we know it today was developed by the Swiss scientist Horace de sassure around 1773.
9. nearly three-quarter of the surface of the earth is covered by water.
10. by the mid-eighteenth century there were so many new immigrants entering North America from Europe that the original colonies in the Northeast were overcrowded.
11. it was not until the end of the seventeenth century that scientists began to stress the importance of experiment as a way of gaining knowledge.
12. stonefish are the most poisonous fish in the world.
13. seismic prospecting is widely used to map out rock structures below the ground.
14. to travel in space, a rocket has to be powerful enough to break out of the pull of the earths gravity.

2)choose the right answer 

1. the first systematic chart ever made of an ocean current was published by Benjamin Franklin.
2. petroleum are found on every continent and beneath every ocean.
3. animals have been lived on earth for at least 700 million years.
4. during the ice age, glaciers advanced and retreated several times over large areas of the earth.
5. some fish are sensing distortions of electrical field through special receptors.
6. the widespread use of oil and gas to make chemicals has begun during the 1920s.

3) from the four underlined words or phrases, identify the one that is not correct.

1. The American architect, Frank Lloyd developed a theory of architecture stressed the needs of the people who used it. /stressed- that stressed/
2. Pelicans have a long, straight bill with a flexible pouch makes of skin on the underside. /makes- made/
3. In some countries, octopuses and snails are considered being great delicacies to eat. /being- to be/
4. Many dyslexics have a difficulty to remembering the sequences of letters in a word and distinguishing right from left. /to remembering- at remembering/
5. Men and women in the Peace Corps work with people in developing countries to help them improving their living conditions. /improving- improve/
6. Seahorses spend much of their time clung with their tails to underwater plants. /much-most/