Reading Exercises. Sentence completion.
Read the text and answer the questions below.
About a quarter of the world's population could have worms living in their guts. For many years experts have recommended treating large groups at risk of infection - but is this mass approach worthwhile?
Evidence showing the benefits of large-scale deworming projects has come under scrutiny in recent weeks - the debate has even been dubbed "worm wars". Parasites, such as roundworm, hookworm and whipworm could be living inside more than 1.5 billion people according to the World Health Organization (WHO).
"People are usually infected through contaminated food but hookworm larvae can also burrow into feet, get into blood vessels and make their way to the heart and lungs. From there they can climb up to the oesophagus* and be swallowed, ending up in the gut where they grow.
Worms are not usually fatal but in serious cases they can cause abdominal pain, diarrhoea, loss of appetite, weight loss, fatigue and anaemia. In children, they can also contribute to malnutrition, stunted growth, and absences from school. A nurse gives deworming treatment to a boy in India
*oesophagus - throat
Complete the sentences below.
Write NO MORE THAN THREE WORDS from the passage for each answer.