Question 1:C

Question 2: D.

Question 1: Natural gas pipeline engineering has the characteristics of large investment and long payback period; The construction of the Second West-to-East Gas Pipeline can transform the resource advantages in the west into economic advantages, alleviate the energy shortage in the east, improve the environmental quality in the east and promote the economic development along the route. The Loess Plateau where the line passes is rich in energy.

Question 2: The project does not pass through Sichuan; The trunk line mainly passes through the western and central economic zones; In the process of construction, it may cause certain ecological damage along the line, but it is not a great damage; This project can increase the proportion of natural gas consumption in the Pearl River Delta and improve its energy consumption structure.