Psychologists at the University of Kansas has studied the effects of the color (of a room on people’s behav.

They are knowthat colds can be avoided by eating the right kind of food and taking exercise regular.

The student _    the highest score will have the opportunity to study abroad.

1971 U.S government policy not only put warnings on cigarette packs but also ban television advertising of cigarettes.

This morning I bought  ............ book and a pencil. The pen is in my bag, but I don’t know where ............. book is.

Since infection can cause fever as well as pain, it is a good idea to check a patient’s temperature.

The government have tried to .................  the price of food, and they finally succeeded.

The government’s budget maybe considered balance when the amount of money it spends does exceed the amount it receives

Humus is formed during soil microorganisms recompose animal and plant material into usable elements by plants.

Louis Braille designed a form of communication enabling people to convey and preserve their thoughts to incorporate a series o which were read by the finger

Nara hardly never misses an opportunity to play the tournaments

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

The bite of the Black Widow spider can be very flammatory to the affected erves that hospitalize may be required 

Harry lastly appeared in the role of King Lear at the National Theatre.

In my judgment, I think Hem is the best physicist among scientists of the SEA region 

Gunpowder, in some ways the most effective of all the explosive materials, were a mixture of potas nitrate, charcoal, and sulfur.

Both a term paper and final exam is often required for a college clas

The flag over the White House is risen at dawn (every day by color guard from the United States armed forces

Choose the correct answer to each of the following questions. "It _____ wrong not to visit the Great Barrier Reef once you are in Australia."

The medical problems of parents and their children tend to be very similar to because of the heredi nature of many diseases

Choose the letter A, B, C or D to complete the sentences. "I decided ________ on a ecotourism tour this summer."