求直线y=2x+1与直线x=0，x=1和y=0所围平面图形的面积，并求该图形绕x轴旋转一周所得旋转体的体积。

Which of the following statement is closest in meaning to the passage you have just heard

A．The WTO ministerial conference held at Cancun is disappointing because the poor countries could not participate in the event.

B．The Cancun ministerial meeting was intended to create a more open and equitable trading system.

C．The main objective of the Cancun conference was to help the poorest countries in the world to develop their economy.

D．Opening up the market in poor countries would have a negative impact on their national economic development.