The weightlifter who allegedly took performance drugs have been named today.

In a person’s lifetime, brain can store 100 trillion pieces of informations

Identify the error in each sentence: Despite there are some disadvantages, the potential of alternative sources of energy is great.

There are no easy ways to learn a foreign language, ______?

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

Do it right now, ______?

The sum of all chemical reactions in organism’s living cells are called its metabolism

Malnutrition is a major cause of death in those countries where cultivation of rice have been impeded by recurrent 

"Are you still going to Florida for vacation?” "Yes, but I really  .............. because I don’t have much money.”

Several comet are discovered each year, but very few of them bright enough to be seen without aid of magnification

His roommate is not clever student, but he certainly works hard indeed.

Choose the word or phrase among A, B, Cor D that best fits the blank space :
For most of their time in orbit, astronauts are fully  ……….with repairs and scientific experiments.

At the awards banquet, philanthropist was recognized for his generosity and careful in aiding the poor

Armstrong was the first person to set ________on the moon.

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

To his surprise, the engine started by first try.

Although she is 103 but, she still does a lot of work in flat.

He looked like he had been in some strange land where age advanced at a double.

 The room is too dark. You’d better need ...............  a bright color.

Most bats roos crevices, caves, or buildingday and are active at night or twilight.

Nuclear powers production in the us is controlled by the Nuclear Commission