Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the blanks.

     Scientists believe they now have scientific evidence to prove that ecosystems work better when there is a greater variety of species within them. This biodiversity is being lost destroying natural mechanisms that could repair the damage caused by man. 

     Findings show that losing plants and animals is not only reducing our quality of life but actually endangering our very existence. We cut down rich rainforests and replace them with one species plantations, such as pine and eucalyptus. We plough up meadows rich in different grasses and herbs and replace them with one grass, for instance rye or wheat. 

     When a natural ecosystem is simplified the basic processes in the ecosystem are altered and even damaged. Without their biodiversity, they are not able to serve as the natural cleaners of our planet. No longer are they able to absorb the carbon dioxide that is being produced in excess. The result is global warming, caused by the increase in the 'greenhouse effect', and ultimately, or even sooner, there will be a change in the world's climate. 

Which of the following is the best title for the passage? 

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

    for 4 hours, they decided to stop to have lunch at a cheap restaurant.

Shopping on the internet can be safe if you follow a few simple rules.

The puppy stood up slowly, wagged their tail, blinked its eyes, and barked.

                                   A                        B              C                     D

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 31 to 35.

     Who talk more men or women? Most people believe that women talk more. However, linguist Deborah Tannen, who has studied the communication style of men and women, says that this is a stereotype.  According to Tannen, women are more verbal - talk more in private situations, where they use conversation as the “glue” to hold relationships together. But, she says, men talk more in public situations, where they use conversation to exchange information and gain status. Tannen points out that we can see these differences even in children. Little girls often play with one "best friend", their play includes a lot of conversation. Little boys often play games in groups; their play usually involves more doing than talking. In school, girls are often better at verbal skills, boys are often better at mathematics. 

     A recent study at Emory University helps to shed light on the roots of this difference. Researchers studied conversations between children aged 3-6 and their parents. They found evidence that parents talk very differently to their sons than they do to their daughters. The startling conclusion was that parents use more language with their girls. Specifically, when parents talk with their daughters, they use more descriptive language and more details. There is also far more talk about emotions, especially with daughters than with sons. 

Which sentence best expresses the main idea of the first paragraph? 

Air pollution is getting                            serious in big cities in the world.

“Would you like to come out to dinner with me tonight, Jenny?” Paul said.

When asked about their preference for movies, many young people say that they are in favor          science fiction.

John didn’t understand what the story was about until he saw the film based on it.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

I’m getting better at this job,______?

________to my country, I will have been away from home for more than three years.

On my birthday, my mother gave me a                          .