In this section, you will hear five short news items. Each
item will be read only once. After each item, there will be a pause. During the
pause, read the question and the three choices marked A, B and C, and decide
which is the best answer. Then mark the corresponding letter on the answer sheet
with a single line through the centre.
How old are the children to be immunised
A． Under the age of four. B． Under the age of five. C． Under the age of six.