Read the following passage and circle the letter A, B, C, or D to indicate the correct answer to each of the questions from 28 to 34.

Intelligence pills

Some scientists have predicted that healthy adults and children may one day take drugs to improve their intelligence and intellectualperformance. A research group has suggested that such drugs might become as common as coffee or tea within the next couple of decades.

To counter this, students taking exams might have to take drug tests like athletes. There are already drugs that are known to improve mental performance, like Ritalin, which is given to children with problems concentrating. A drug given to people with trouble sleeping also helps people remember numbers.

These drugs raise serious legal and moral questions, but people already take vitamins to help them remember things better, so it will not be a simple problem to solve. It will probably be very difficult to decide at what point a food supplement becomes an unfair drug in an examination.

(Text adapted from: https://www.usingenglish.com/comprehension/21.html)

Question 28. What is the passage mainly about?

A. Laws related to intelligent drug use​B. Predictions about intelligent drugs

C. Common food supplements on market​D. Drug tests in sports and in school exams

Question 29. When are intelligent drugs expected to be common?

A. Next year​B. In the next decade

C. In the next few decades​D. In the next century

Question 30. Which of the following is closest in meaning to intellectual?

A. scholarly​B. intelligent​C. illegal​D. critical

Question 31. Which of the following is closest in meaning to counter?

A. meet a person by chance​B. queue to pay money atsupermarket

C. respond to an idea​D. agree with an idea

Question 32. What is the effect of Ritalin?

A. improve children's intelligence
B. improve children's concentration
C. improve children's ability to remember numbers
D. help children sleep better

 

Question 33. Which of the following is closest in meaning to a supplement?

A. a different portion of food​B. a pill you take besides your food

C. a supply service​D. a soft tablet

Question 34. What has been already used as food supplements now?

A. drugs to improve the ability to remember numbers
B. drugs to improve physical strengths
C. drugs to improve sleep
D. A, B and C are all correct