[单项选择]If you traveled on one of the nation’s Interstates in these last few days before Memorial Day, you might have encountered an unusual sight; bikers by the dozens stretched half a mile down the highway, their motorcycles flying military banners and spewing exhaust.
They are an intimidating bunch. Sheathed in leather from the neck down, they look like physical extensions of their bikes. But these riders are no motley crew. They are members of Rolling Thunder, a nationwide network of veterans and their supporters. Their destination: the Rolling Thunder Memorial Day rally on the National Mall in Washington.
Rolling Thunder, which has thousands of members, was founded in 1987 when some Vietnam veterans and advocates for P. O. W. ’s and M. I. A. ’s befriended one another on the mall. They were looking for a special way to promote their cause. Ray Manzo of Hoboken, N. J. , now a former marine, suggested motorcycles. The idea grabbed them. Masses of bikes descending on Washington
A. Its destination is the National Mall in Washington.
B. It is a ten-day, eight-state, 3,000-mile journey.
C. It is carried out annually as a special way to promote the cause of the Rolling Thunder.
D. It drews 2,500 bikers in the first year.