V. Choose the best answer and complete the passage.
Brother Ray and sister Susan were on a sailing holiday near Newport, Rhode Island. But because of huge waves on the sea, their boat turned over, and they were thrown into the ocean.
Ray, 17, and Susan, 16, spent 30 minutes trying to get the boat back into its right location 1______ without success. They couldn't return to the boat safely, and neither could they attract the attention of passing ships. After they had been in the freezing water for about 40 minutes, the 2______ was getting worse. Their body temperature had dropped too much. Suddenly Susan remembered her mobile phone was in a sealed plastic bag in her pocket, and reached for it.
She didn't dial 911. 3______, she called their father, who was 2,500 miles away in Seattle on a business trip. Susan explained: "I thought it would be quicker to call someone I know and tell them our location. I dialed Dad's number and he would 4______ the Coast Guard for us as soon as possible."
About ten minutes later, after they had held on to the boat for nearly an hour, they heard a rescue helicopter. Next, everything went on well. Ray and Susan were picked up and carried to 5______.
Afterwards, the Coast Guard said that the kids were very, very 6______ that the phone had worked. "Anyone in trouble should call the Coast Guard directly by calling 911 rather than someone else," he added.
( )1. A. and
B. but
C. or
D. so
( )2. A. government
B. environment
C. scene
D. situation
( )3. A. Instead
B. Maybe
C. Besides
D. Therefore
( )4. A. compare
B. attract
C. contact
D. attack
( )5. A. safety
B. activity
C. university
D. society
( )6. A. stupid
B. kind
C. crazy
D. lucky