Floods, earthquakes and other natural disaster happen all over the world, causing death and material damage.

Are there enough champagne to go round ? Will everybody get a glass?

From 1905 to 1920, American novelist Edith Wharton was at the height of her writing career, publishing of her three most famous novels.

This will have a serious effect about agriculture

Research has proved that a baby can distinguish its mother’s voice the moment he is born.

A huge tree crashed through the bedoom roof and broke my bed and most of the other furniture. __________ in the room, I would have been killed. 

James often goes swimming in the summer, _    ?

After talking in Copenhagen yesterday, the secretary of state returning to Washington

Many heavy work that was once done by hand can now be done more easily with the help of compressed air.

Gothic Revival architecture has several basic characteristics that distinguish it from other nineteenth-century architectural styles

It is large island, few people live there, though.

A calorie is the quantity of heat required to rise one gallon of water one degree centigrade at one atmospheric pressure.

Bacteria lived in the soil play a vital role in recycling the Carbon and Nitrogen needed by plants.

New uses for plastics were found during the 1950’s and 1960’s in medicine, space, research, industrial, and architecture.

Choose the correct answer to complete the sentence. "Scientists predict that by 2030, the rainforest will have ______ smaller by 40%. "

David is talking to his friend, _    ?

Gold, silver, and copper coins are often alloyed whit harder metals to make them hard as enough to withstand wear.

Nitrogen must be combine with another element such as Hydrogen or Oxygen to be useful in agriculture or industry.

According to most psychological studies, body language expresses a speaker’s emotions and attitudes, and it also tends to affect the emotions and attitudes of the listen.

Drug abuse have become one of America’s the most serious social problems .

Yogurt contains a higher percentage of lactic acid than another fermented milks, and it is rich in B-complex vitamins.