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 38 to 42.

Dolphins are one of the most intelligent species on the planet, which makes them a very interesting animal to scientists. In their natural habitats, dolphins use various vocalization techniques. They whistle and squeak to recognize members of their pod, identify and protect their young, and call out warnings of danger. They also make clicking sounds used for echolocation to find food and obstacles in dark and murky waters.

Amazingly, the whistling sound that the bottlenose dolphin makes has been found to have a similar pattern to human language. They always make conversational sounds when they greet each other. If you listen to dolphins' squeaks and squeals, it will sound like they are having a conversation.

Dolphins usually use both sound and body language to communicate with each other. It is through gesture and body language, however, that most of their communication with humans comes. Dolphins can be trained to perform complicated tricks. This suggests they have a high level of intelligence and communication capacity. If they work for a long time with a trainer, they are able to recognize and understand human commands.

A lot of dolphin communication has been studied using dolphins in captive environments. These studies have been criticized because some marine biologists believe that dolphins living in aquariums or research centers cannot be considered "normal." Even so, most believe that studying dolphin communication in captivity is useful for beginning to understand the complexity of dolphin communication. After all, dolphins are one of the most intelligent animals. Their ability to communicate is impressive and worthy of study.

What would be the most suitable title for the passage?

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

A few days ago, ____________problem arise. However, until now, we haven’t found any solutions to it yet.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks from 33 to 37.

VIRTUAL DOCTORS

Clare Harrison rarely falls ill and hates going to the doctors when she does. So when she recently (33) ____________out in a painful rash down one side of her body she emailed her symptoms, (34) ____________also included a (35) ____________fever, to e-doc, the internet medical service. Two hours later she was diagnosed as having shingles (Herpes Zoster) by her online doctor, who prescribed a special cleansing solution for the rash and analgesics to help relieve the pain.

Health advice is now the second most popular topic that people search for on the internet, and online medical consultation is big business. Sites vary enormously in what they offer, with services ranging from the equivalent of a medical agony aunt to a live chat with a doctor via email. They are clearly (36) ____________a demand from people who are too busy or, in some cases, too embarrassed to discuss their medical (37) ____________with their general practitioners.

Overcrowded slums are often considered as breeding ground____________crime.

The military court____________ the major for failing to do his duty.

If you cannot improved sales figures this month, you will be____________sacked.

It is probably impossible for life to ever exist on Venus____________its intense surface heat.

I think Trump can easily win the election. He is a man of the____________.

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

A severe illness when she was just nineteen months old deprived the well- known writer and lecturer Helen Keller from both her sight and hearing.

Thirty-one people have been injured in____________incidents throughout the day.