Questions 14 to 16 are based on the following passage. At the and the passage, you will be given 15 seconds to the questions.
Now listen to the passage. Why can’t people on earth be harmed by radiation
A．Because men on the Earth are protected by the atmosphere. B．Because radiation only has short-term effects on men on the Earth. C．Because there is a great distance between the Earth and the radiatio areas. D．Because the Van Allen Belts absorb all radiation.