题干

“丁香”和“小花”是好朋友,她们相约本周末去爬歌乐山,并约定周日早上8:00至8:30之间(假定她们在这一时间段内任一时刻等可能的到达)在歌乐山健身步道起点处会合,若“丁香”先到,则她最多等待“小花”15分钟.若“小花”先到,则她最多等待“丁香”10分钟,若在等待时间内对方到达,则她俩就一起快乐地爬山,否则超过等待时间后她们均不再等候对方而孤独爬山,则“丁香”和“小花”快乐地一起爬歌乐山的概率是____(用数字作答)
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    Diane Ray was completely self-centered and very spoilt. Her parents gave her1she wanted, knowing that she would throw a temper tantrum(耍小孩脾气)if they did not. She would scream and kick and2on the floor drumming her heels. Her parents always3.

    That was why she was alone on the4, wearing an expensive swimsuit. It has taken a massive tantrum to5her parents to buy it. They were back at the beach-house,6from the tantrum she had thrown when they told her that it was too dangerous to go diving7. “Dangerous?” she had said. “You just don't want me to have8. I'm going and if you try to stop me, I'll scream.”

    “What are you doing ?” a voice asked. Diane jumped. She did not know that the man was there9  he spoke .

    “I'm going diving, ” she answered.

    “You shouldn't swim that day, ” the man10. “There is a storm coming up.”

    “You should mind your own11!” Diane replied and walked into the gentle waves.

    “If you go out there you'll be12,” the man called after her. She did not bother to reply.

    Diane slipped into the water and dived13until white caps began rolling in and it became harder to14against the current (水流). Saltwater hit against her face, making it15to breathe. Oh, why had she not listened to advice.

    Panicking, she began to16. Then, just as it seemed as if she would slip beneath the surface, she heard a17voice. “Hold on ! I'm coming.” With18, she saw the old man rowing an ancient-looking boat towards her. “I hope you've learned a lesson. You put us both in19, ” he shouted angrily, as he dragged her over the side of the20. Gratefully, Diane thanked him and ran towards the beach-house.