2.Let be continuous and nonnegative on the closed interval. Then the region bounded by the graph of, the -axis, the vertical lines, and is called the trapezoid with curved edge.
4.From the early 1960s to the present, the region has planted 70 million trees and hillsides closed off for forest conservation reached 140,000 hectares a year.
5.The new round of wrestling between China and India in the South Asian Region was staged at the South Asian Alliance on Regional Cooperation (SAARC) Summit closed in Dacca, capital of Bangladesh on November 13.