Many doctors are still general practitioners, but the tendency is toward specialization in medicine.

The copperhead, a snake that strikes without warning, is considered more dangerous than the rattlesnake.

Mounting evidence indicates that acid rain is damaging historic sites in Boston and Philadelphia.

In the early days of baseball, the game was played by young men of means and social position.

The activists were accused of contaminating the minds of our young people.

The fer-de-lance, a kind of viper, is one of the most poisonous snakes.

Primary education in the United States is compulsory.

Peter didn’t mean to be disrespectful to his teacher. He just couldn’t control his temper.

The new amphitheater was based on the ancient Greek design.

Proximity to the court house makes an office building more valuable.

Relaxation therapy teaches one not to fret over small problems.

A brief outlined of the course and bibliography were handed out to the students at the first meeting.

I told you clearly and definitely not to write your answers in pencil, Smith!

The sales of drugs is controlled by law in most of countries.

In the United States, a party can nominate a single candidate for office.

Hypertension is one of the most widespread and potential dangerous diseases.

Now I understand why you moved out of that house.

The new cow boy-film catches the fancy of the children.

I didn’t go to work this moring. I stayed at home because of the morning rain.

If petrol price go up any more, I shall have to use a bicycle.

There were so many members of the political party who had gone against the leader that he resigned.

His new yatch is certainly an ostentatious display of his wealth.

Victoria Holtand William Shakespeare are prolific writers.

The raccoon is a nocturnal animal.

Before the earthquake hit the area,many minor tremors were felt.

Studies of climatology indicate that volcanic dust in the atmosphere may contribute to the onset of ice ages.

In Benjamin Franklin's almanac, he warns against making hasty decisions.

In the 1776 pamphlet "Common Sense," Thomas Paine defended the cause of the American Revolution.

We watched as the plane disappeared behind the clouds.

The museum dismissed the curator after some of the oldest paintings were damaged.

The use of lasers in surgery has become relatively commonplace in recent years.

Helen Keller, blind and deaf from an early age, developed her sense of smell so finely that she could identify friends by their personal odors.

Adverse reviews in the New York press may greatly change the prospects of a new Broadway production.

The aircraft carrier is indispensable in naval operations against sea or shore based enemies.

Scientists warn of the impending extinction of many species of plants and animals.

In most countries, compulsory military service does not apply to women.

The famous racehorse Secretariat had to be destroyed because of a painful, incurable hoof disease.

I’ll take the new job whose salary is fantastic.

The teacher gave some suggestions on what could come out for the examination.

He was asked to account for his presence at the scene of crime.