Read the following article and select the best answer. Article: Why does the Leaning Tower of Pisa in Italy lean? It leans because of a mistake. It has leaned almost since the day the tower was built. In 1173, the people of Pisa, Italy, wanted to build a bell tower. They wanted the tower to be the most beautiful bell tower in all of Italy. The city also needed a bell tower because the church did not have one. However, there was a problem. As soon as the first floor of the building was finished, the tower started to lean. Builders tried to make the building straight again as they added more floors, but they couldn't figure out how to make it stop leaning. It took almost 180 years to finish the tower. Since then, the tower has leaned by another millimeter every year. Today, the Leaning Tower has eight floors and is 54.5 meters tall. By 1990, it was leaning by about 4 meters to one side. It was also slowly sinking into the ground. Many people became worried that it would soon fall apart. In 1998, repair works began on the tower, and by the end of 2001, it had been moved back by 45 centimeters. The tower will still lean, however, so it will need to be repaired again---in another 200 years. Question: Which of the following is NOT true about the tower? - It was sinking into the ground - People were worried it might fall apart - It was repaired between 1990 and 1998. - It will need to be repaired again in 200 years.
It was repaired between 1990 and 1998.

Read the following article and select the best answer. Article: Emergency rooms (ER) are supposed to cure people but Dr. John Stemgold wonders if working in an ER in Willits made him sick. The ER was downwind of the Remco chrome plant. "I used to sit facing that window and kind of daydream out the window, looking at Remco, looking at the fog coming out of there. Then I would cough and cough." Stemgold said. What Dr.Stemgold didn't know was that Remco was flowing out Chromium VI into the air--- a chemical known to cause cancer and breathing problems in humans. A recent state health department study found that people who were in Willits when Remco was in operation from 1964 to 1995 are at higher risk for cancer because of Chromium VI exposure. Today Dr.Stemgold has lots of time to play his guitar. It turns out he has a form of breathing difficulty. Hospital chemicals cause coughing so violently that he's broken bones and it's cost him his career. Others in this town believe the Chromium has made them sick, too, and their families. Actually, Chromium VI was classified as a carcinogen , a cancer-causing substance, thirty years ago, Twenty years ago, a group of state scientific specialists found no exposure level below which carcinogen effects would not have some probability of occurring. Still, Remco was allowed to flow out Chromium VI into the air. In the battle to balance public health and a healthy economy, laws often favor business, Alan Ramo is a professor of law at Golden Gate University. "There is a real drive to make money, to have employment. When there's a real job that's available and a theoretical risk of a chemical, jobs win out, business wins out." And chemicals are allowed to flood the marketplace and the government requires strict testing before any drugs can be sold. But the vast majority of industrial chemicals are put into use little testing of any kind Chemicals that people like us, you and me might be exposed to. Marilyn Underwood is with California state health department. " You need to have the convincing evidence that something is bad to then start... Question: What can we infer from the scientists' finding twenty years ago? - Chromium VI surroundings help surgeons have more casual life. - More skillful and capable doctors were needed. - There is no safe level of Chromium VI exposure. - A group of scientists were trying proper ways to solve the problems.
There is no safe level of Chromium VI exposure.

Read the following article and select the best answer. Article: An earthquake happens when two plates rub together. The earth plates travel in different directions and at different speeds. If one plate is slowly forced underneath the other, pressure builds up until the plates break apart. This process causes the ground to move. It is an earthquake. In other words, earthquakes are the shaking of the earth's surface caused by the earth's rocky outer layer as a result of the energy stored within the earth. The strain within the rocks is suddenly released . The damage an earthquake causes depends on where it is and the time it is happening. If an unpopulated region is struck, there will be low loss of life or property. If it hits a large city, there may be many injuries and much destruction. Many of the areas at risk are largely populated now. Major earthquakes hitting those areas today could produce terrible damage. Actually, there are several million small earth-quakes every year. Large earthquakes such as the 1964 Alaska quake that measured 9.2 on the Richter scale, cause millions of dollars in damage. In the last 500 years, millions of people have been killed by earthquakes around the world -- including 240,000 in the 1976 Tangshan earthquake in China. A 60-second or less earthquake can cause devastation that continues for years after the first tremor . In 1972, a series of severe earthquakes struck Managua, Nicaragua. Fifteen years later, the city still looked the way it had a week after the earthquake hit, because the country did not have the necessary money to rebuild it. The shaking of the earth is sometimes not the greatest disaster. It is in the _ fires and floods that often the greatest damage occurs. In the 1906 earthquake, it was the fires caused after it that did the majority of the damage. An earthquake can also destroy dams high above a city or valleys, causing floods to sweep down and sweep away everything in their path. Question: Which of the following is mentioned to show that an earthquake can kill too many people? - The 1964 Alaskan quake. - The 1976 Tangshan earthquake. - The 1972 Managua earthquake. - The 1906 earthquake.
The 1976 Tangshan earthquake.