航空运单的性质和作用主要有（） A.承运合同 B.报关单据 C.货物收据 D.物权凭

     Most children like    1    TV. TV is very interesting. On TV    2    can learn a lot, and they can see and
know many things    3    their country and the world. Of course, they can    4    over the radio. But they
can learn better and more easily with   5   . Why? Because they can hear and watch at the same time. But
they can't   6    anything over the radio.
      Many children watch TV    7   Saturday or Sunday evenings. They are very busy with their lessons on 
  8   . But a few children watch TV every    9  . They go to bed very late. So they can't have a good   10   .
How about you, my young friend?