Identify the one underlined word or phrase -A, B, C or D-that must be changed for the sentence to be correct. 
Ninety-seven percent (A) of the world' (B) water is saltwater is found (C) in the oceans (D) of the Earth.
A.percent
B.world'
C.is found
D.the oceans

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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 27 to 34.
For many American university students, the weeklong spring break holiday means on endless party on a sunny beach in Florida or Mexico. In Panama City Beach in Florida, a city with permanent population of around 36.000 more than half a million university students arrive during the month of March to play and party making it the number one spring break destination in the United States              
A weeklong drinking binge is not for everyone, however and a growing number of American university students have found a way to make spring break matter. For them. joining or leading a group of volunteers to travel locally or internationally and work to alleviate problems such as poveriy, homelessness, or environmental damage makes spring break a unique learning experience that university students can feel good about.
During one spring break students at James Madison University in Virginia participated in 15 alternative spring break" trips to nearby states, three others to more distant parts of the United States and five international trips. One group of JMU students travelled to Bogalusa, Louisiana to help rebuild homes damaged by Hurricane Katrina. Another group traveled to Mississippi to organize creative activities for children living in homeless shelter. One group of students did go to exhausting physical labor such Florida. but not to lie on the sand. They performed as maintaining hikra rails and destroying invasive plant species that threaten the native Florida ecosystem.              
Students who participate in alternative spring break projects find them very rewarding. While most university students have to get their degrees before they can start helping people. students volunteers are able to help people now. On the other hand, the accommodations are far from glamorous. Students often sleep on he floor of a school or church, or spend the week camping in tents. But students only pay around $250 for meals and transportation. which is much less than some their peers spend to travel to more traditional spring break hotspots               
Alternative spring break trips appear to be growing in popularity at universities across the United States. Students cite a number of reasons for participating. Some appreciate the opportunity to socialize and meet new friends. Others want to exercise their beliefs about peoples obligation to serve humanity and make the world a better place. Whatever their reasons, these students have discovered something that gives them rich rewards along with a break from school work.
(“active Skills for Reading: Book 2” by Neill J. Anderson – Thompson, 2007)
The word “ binge” in the second paragraph probably means _____.    
A.having very little alcohol          
B.refusing to do something
C.studying for too long                          
D.doing too much of something.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 27 to 34.
For many American university students, the weeklong spring break holiday means on endless party on a sunny beach in Florida or Mexico. In Panama City Beach in Florida, a city with permanent population of around 36.000 more than half a million university students arrive during the month of March to play and party making it the number one spring break destination in the United States              
A weeklong drinking binge is not for everyone, however and a growing number of American university students have found a way to make spring break matter. For them. joining or leading a group of volunteers to travel locally or internationally and work to alleviate problems such as poveriy, homelessness, or environmental damage makes spring break a unique learning experience that university students can feel good about.
During one spring break students at James Madison University in Virginia participated in 15 alternative spring break" trips to nearby states, three others to more distant parts of the United States and five international trips. One group of JMU students travelled to Bogalusa, Louisiana to help rebuild homes damaged by Hurricane Katrina. Another group traveled to Mississippi to organize creative activities for children living in homeless shelter. One group of students did go to exhausting physical labor such Florida. but not to lie on the sand. They performed as maintaining hikra rails and destroying invasive plant species that threaten the native Florida ecosystem.              
Students who participate in alternative spring break projects find them very rewarding. While most university students have to get their degrees before they can start helping people. students volunteers are able to help people now. On the other hand, the accommodations are far from glamorous. Students often sleep on he floor of a school or church, or spend the week camping in tents. But students only pay around $250 for meals and transportation. which is much less than some their peers spend to travel to more traditional spring break hotspots               
Alternative spring break trips appear to be growing in popularity at universities across the United States. Students cite a number of reasons for participating. Some appreciate the opportunity to socialize and meet new friends. Others want to exercise their beliefs about peoples obligation to serve humanity and make the world a better place. Whatever their reasons, these students have discovered something that gives them rich rewards along with a break from school work.
(“active Skills for Reading: Book 2” by Neill J. Anderson – Thompson, 2007)
How many university students travel to Panama Beach City every March for spring break?
A.Around 500.000  
B.Around 10.000 
C.Around 36.000  
D.Around 50.000

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the question.
            Sunlight is solar energy. Sunlight is needed for growing plants that you eat to get energy. Sunlight is also used to make clean electricity. Burning fossil fuels to make electricity pollutes our atmosphere and rivers. Fossil fuels are expensive and limited sources of energy. Nuclear fission is used to create enormous amount of heat and electricity. However, nuclear fission forms dangerous radioactive waste.
            Sunlight offers many ways to get energy. A window can allow warm sunlight into your room. Solar water-heating systems can use sunlight to warm the water for your home, swimming pool and school. Sunlight also warms the Earth and causes wind. Electricity can be made by wind generators.
            Photovoltaic, or PV system use a type of material that converts sunlight into electricity. PV systems can power your air conditioner or a satellite like the International Space Station. PV systems are also used to run a calculator, recharge cell phones, or even power lightweight cars.
            Sunlight is also changed into electricity by concentrating solar power or CSP systems. CSP systems have mirrors that focus the sunlight. The concentrated sunlight turns water into steam which turns a turbine that is connected to an electric generator. A CSP system is like an electric power plant that burn coals or natural gas to create heat. But a CSP system usually use sunlight to make steam. CSP power plants can store large amounts of heat. The stored heat is used to make electricity at night. During cloud days, many CSP plants can also burn natural gas to provide the heat that is used to turn water into steam.
            Sunlight provides the energy needed to grow plants and make large amounts of environment-friendly heat and electricity. Solar can provide power today and for a long time in the future.
The drawback of nuclear fission is that _______.
A.it sends out energy in the form of rays that can be harmful.
B.it is costly.
C.it releases smoke.
D.it is time-consuming to be formed.