Wetlands, forests and oceans are called the three major ecosystems in the world. They also have other ecosystems in flood control, drought resistance, climate regulation and pollution control.

Q

Wetlands, forests and oceans are called the three major ecosystems in the world. They also have other ecosystems in flood control, drought resistance, climate regulation and pollution control.

Question 1:D

Question 1:D

Test analysis:

Question 1: According to the relevant contents of the textbook, wetlands mainly include swamps, rivers and lakes, coastal beaches and so on. But the Bohai Sea cannot be included because it belongs to the marine ecosystem. According to the options provided, only D is correct.

Question 1: From the analysis of the above questions, we can see that the swamp belongs to the wetland ecosystem. According to the materials and what we know, the purpose of stopping reclamation of marshland in Sanjiang Plain is not because the soil here is barren and the development cost is too high, nor because China has surplus grain and the price has fallen, but to protect and improve the ecological environment. So choose d

Comments: This group of questions requires candidates to be familiar with the scope and ecological functions of wetlands. Combined with the related materials in Compulsory 3, it is not too difficult to complete this group of questions, which is relatively easy.