填空题

Along the coast of the United States, the U.S. Coast Guard helps ships that get into difficulty at sea. The Coast Guard, like the Navy, is (36) by the U. S. government. It receives the money that it needs from the government; therefore its ships, planes, and (37) are very modern. In Great Britain the (38) is very different. There are a small number of men, called lifeboatmen, who go out to help ships in trouble. These brave men often risk their lives, but they (39) no money for their work. They live in small towns on the coast, and most have other jobs. The special lifeboats that they need are provided by the Royal National Lifeboat (40) (R. N. L. I.), a private group which depends completely on money from private people. The R. N. L. I. does not accept any money from the (41) . As a result, it can not always buy the best and most modern lifeboats. For example, about ten years ago, British researchers began to (42) the lifeboats which were in use at that time. According to their (43) , the lifeboats never sink, (44) . (45) . The R. N. L. I. began to buy this safer kind of boat, but it could be only one or two every year. (46) .