While studying the chemistry of human body, Dr. Rosalyn Yalow won a Nobel Prize for the research she conducted on the role of hormones.

A pharmacist’s ethical standards have to be high because he is entrusted to the storage and distribution of dangerous drugs.

I’m just going to the shops; if anyone rings, tell them I will be back for a few minutes.

Choose the correct answer to complete the sentence. "These companies were accused _____ having released a large amount of carbon dioxide into the atmosphere."

Our primary goal is to teach students to discover the truth. But we have also other aims, such as providing them with knowledge or to teach them to work consciously

Although almost all insects have six legs, a immature insect may not have any.

To be successful in an interview, you should control the feeling of pressure and making a good impression on the interview

One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

If we will reduce the speed of population growth, there will be less pressure on the earth. 

After writing it , the essay must be duplicated by the the student himself and handed into the department secretary before the end of the month.

He seldom goes to the park, _    ?

Choose the correct answer to complete the sentence. "Nowadays the common method for drying vegetables and minced meat is putting them in chambers and blowing hot air through."

Education is desperately needed in many countries where a high percentage of the population are illiterate.

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.

However types of raw materials are used in making paper, the process is essentially the same.

Choose the correct answer to complete the sentence. "We need to cut down on the ________ of carbon dioxide into the atmosphere."

Lan never goes out at night,  _    ?

Living in New York, apartments cost more to rent than they do in other smaller cities

Since fireworks are dangerous , many countries have laws preventing business to sell them.

Mr Ross, our old history teacher ruled his classes by a rod of iron!

Choose the correct answer to complete the sentence.  "In the polluted environment, _______ diseases can be passed easily from one person to another"

In 1950 , it was naively predicted that eight or ten computer would be sufficient to handle all of the scientific and business needs in the United States.