The author's attitude towards water crisis is ______.

A．it costs a large amount of money which is not affordable
B．the government worries about the quality of the water conservancy
C．it destroys the habitat of plants and animals of that area
D．the government becomes more and more ignorant

A．provides us with the weapons for attacking others
B．introduces the tools that help us fight against memory loss
C．tells us about the important things we should never forget
D．explains the facial features useful for us to remember People