Nujiang River is one of the great rivers in the "Three Parallel Rivers" approved by China as a World Heritage List. It originated in the southern foot of Tanggula and flowed through Tibet, Yunnan and

Nujiang River is one of the great rivers in the "Three Parallel Rivers" approved by China as a World Heritage List. It originated in the southern foot of Tanggula and flowed through Tibet, Yunnan and Tong Tong.

Question 1:A

Question 2:B

Question 3: D.

Question 1: This topic examines the impact of reservoir construction on the environment. Building dams may cause soil salinization; Siltation in estuary delta is slow; Backwashing of seawater erodes the coast; The number of fish in offshore waters has decreased. Irrigation, shipping and aquaculture are beneficial effects. So choose option a in this question.

Question 2: This topic examines the construction conditions of reservoir dams. The construction of reservoir dam needs to be in the canyon, with a small amount of work and a solid geological foundation, and it is necessary to avoid faults. The favorable natural conditions for dam construction in Nujiang River are concentrated water energy and good geological conditions for dam construction. So this question chooses option B.

Question 3: There are many objections to Nujiang hydropower development, which should be mainly considered from the adverse effects of reservoir construction. The choice in the question is reasonable. So choose option d in this question.