Publicity is limited, when a company fails to control the activities of a certain______.

A．Man knows where the society is going.
B．People don’t welcome the rapid development of our modern society.
C．The speaker is worried about the future of our modem society.
D．Man can do nothing about the problem of pollution.

A．To save space.
B．To help the plants grow healthily.
C．To make plants yield more fruits.
D．To water the plants easily.