题目内容：

阅读下面短文，掌握其大意，然后从21-30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

It was a sunny day. My father and I went ________. My dad carried a backpack full of snacks and water bottles. I held the camera and my ________. “I wish you’d left these headphones at home,” my dad said. “You need to hear to hear me if we’re in danger.”

During the hike, I listened to my MP3 player while my ________ tried to talk with me. Two hours later, we stopped to have a rest. My dad found some berry bushes and began collecting berries. I sat down and listened to my music.

The sun felt so warm that I fell asleep. When I awoke, I ________ find my dad. I was afraid and started walking along the path to search for ________.

After walking for an hour, I stopped and sat down on a rock. Unluckily, the ________ was full of ants and they started crawling inside my clothing. I was jumping up and down to get the ants away when I heard laughter behind me. I turned and saw my dad coming out from the trees.

“Dad!” I cried. “________ have you been?”

“I was following you the whole time,” he answered. “Wanted to see how you would do ________. Don’t you remember me telling you to  heck rocks for ants ________ sitting down?”

I guess I hadn’t been listening. My dad ________ me to get the ants away and we walked together down the mountain. This time I kept my headphones in my pocket and listened to the things he told me along the way.

1.A. swimming    B. hiking    C. skiing    D. skating

2.A. book    B. Mobile phone    C. computer    D. MP3 player

3.A. grandpa    B. grandma    C. dad    D. mom

4.A. couldn’t    B. could    C. needn’t    D. need

5.A. us    B. them    C. him    D. her

6.A. river    B. mountain    C. tree    D. rock

7.A. Where    B. Who    C. When    D. How

8.A. by bike    B. for free    C. with his help    D. on your own

9.A. after    B. before    C. since    D. until

10.A. preferred    B. expected    C. helped    D. invited