Since rats are destructive and may carry diseases, therefore many cities try to exterminate them

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

Not everyone believes that ..................technology has improved .................. quality of people's lives. 

Because of its vast tracts of virtually uninhabited northern forest, Canada has one of the lowest population density in the world

Industrialist Henry Ford introduced assembly-line techniques into the manufactures of motor vehicles.

Jeff wouldn’t have bumped into the waitress if he ____ in such a hurry. 

.................gold is perhaps .............. most highly treasured metal. A. the / X B. X / the C. the / the D. X / X

Chicago’s Sears Tower, now the tallest building in the world, rises 1,522 feet from the ground to the top of it antenna.

If you make a five-days trip across the Atlantic Ocean, your ship enters a different time zone everyday.

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

If he weren’t too old, he would apply to the job as a reporter. 

Choose the correct answer to complete the sentence. "______ they stopped deforestation, it might help prevent global warming"

Because the diamond is the hardest naturally occurring substance, it is used in industry for to cut, grinding, and boring other hard materials.

With its strong claws and many protruding tooth, a gopher is an excellent digger

Pop Art was a movement of the 1950’s and 1960’s whom imagery was based on readily recognized American products and people.

When he took the ticket out of from his pocket, a hundred dollar bill fell to the floor without his noticing

Choose the correct answer to complete the sentence. "They were praised for having decided ______ their carbon footprints"

The plans for the building complex were describing by the architect

Electric lamps came into widespread use during the early 1900’s and have replaced other type of fat gas, or oil lamps for almost every purpose.

In spite of her physician handicaps, Helen Keller graduated from Radcliffe with honors

Many people who live near nuclear plants are concerned. _________ go wrong, the impact on the surrounding area can be disastrous. 

Neither of the two candidates who had applied for admission to the Industrial Engineering Department were eligible for admission.