填空题 Recently two million Swedish drivers abruptly changed their driving habits. Driving was (47) from the left-hand side of the road to the right, as in the United States. Terrible traffic (48) were predicted. But none (49) . And the accident rate didn't (50) .
There were strong reasons for the change. For years Swedish cars have been built for export. The (51) wheel is placed on the left, United States fashion. The Swedish driver trying to (52) a truck had to go almost all the way into the oncoming lane to (53) the road ahead.
Some problems have (54) because of the change. Over a quarter of a million traffic (55) had to be switched. Low-speed exit ramps from highways became entrance ramps with high speeds. Buses and trolleys used to let people out at the curbs. They now leave their riders in the middle of (56) .

• A) occurredI) arisen
• B) passJ) signs
• C) climb K) appeared
• D) steering L) up
• E) check M) pictures
• F) switched N) examine
• G) jams O) through
• H) traffic