Can you imagine how you would feel if you

问题：

Can you imagine how you would feel if you fell dangerously ill and could not reach or call a doctor Millions of people (1) the world are in this unfortunate (2) , living in distant places (3) there are no railways, no proper roads and no telephones. Thousands of (4) are lost every year (5) could have been saved if medical attention (6) in time. (7) today help could be brought quickly and easily (8) many of these people (9) full advantage was taken (10) the aeroplane. (11) country has proved this (12) than Australia. The Australians (13) greater use of the aeroplane than any (14) people in the world. In no other country (15) the total number of miles flown by the (16) person so high. In fact, it has been (17) that Australians jump into planes (18) people in other countries jump into trains and buses. It is not surprising, (19) that Australia should have been the first country (20) a Flying Doctor Service.

A．people

B．children

C．lives

D．families