邓 * * 指出，社会主义原则，第一是发展生产，第二是( )。

A．消灭私有制

B．消灭剥削

C．共同致富

D．消除两极分化

One of the effective ways to lessen environmental pollution is the reservation and protection of more swamps.

A. vast thick corals

B. pockets of wetland
C. warm volcanoes

D. millions of bees and wasps