A number of the Pacific Islands are volcanoes that have pushed up from the ocean floor, the others are the tops sunken mountain ranges

For many years, scientists studying the effects that the sun has on human skin.

Kiwi birds search the ground with the bills for insects, worms, and snails to eat.

Geologists find it useful to identification fossils in a rock sample because certain assemblages of species are characteristic of specific geologic time periods

Advertising it provides most of the income for magazine, newspapers, radio, and television in the United States today

We really enjoyed the children’s imaginative and excited play last Saturday.

Nowhere he could find a good place to study, so he returned to his dorm.

There is a rumour that the army is about taking power, though this has been denied by government sources.

Nomadic hunter and gatherer societies have access to only a limited amount of food in an area and moved on when they have exhausted each locality.

Nobel Prizes are awarded to people who excellent in their fields above and beyond what is expected from scholars.

Alcoholic beverages vary widely in content, ranging from only 2 or 3 percent for some light beers to as high to 60 percent for some vodkas and brandies

The threat of being dismissed do not worry me any more because I have started my own business.

Nobody knows the truth, _    ?

Today’s nuclear fission fuels are the remnants of which used to be a much more active mixture of radioactive and fissionable materials two billion years ago and earlier

From archeological evidences, we know that Egyptians were highly organized and civilized. Moreover, they were skillful in using crafts.

Lassen National Park, the situation of a dormant volcano, is one of the most beautiful but least visited parks in the western United States.

The number of students attend the class dwindled until only two remained.

Nara hardly never misses an opportunity to play in the tennis tournaments

There always is one wise woman who is both feared and respected by her people

The native people of the Americans are called Indians because when Columbus landed in the Bahamas in 1492 , he thought that he has reached the East Indies.

Because helicopters are capable of hovering in midair, they are particularly useful for rescue missions, military operates, and transportation.