She was so stubborn that she never listens to the advice to her.

A．industrial products are more important to life system than natural environment areas
B．it is only on islands that true nature reserves exist
C．we have forgotten what our original countryside looked like
D．industrial development should take the responsibility for the reduction of our natural environment areas

A．children have a special talent to learn languages
B．it will take a very long time to master a language
C．the linguistic ability will be weakened as one grows up
D．children have an amazing way to separate two languages