四、阅读理解。
1.Are you bored with your nine-to-five routine（日常）? Would you like to experience something new? Do you have any ideas? Have a look at our exciting plans of holidays.
2.Activity holidays Our activity holidays are for everyone, especially for adventure（冒险）and sports lovers. We'll take you to swim in the Red Sea or go boating in Canada. If you prefer snow, you can try skating in the Alps. For those who like warmer weather, we also have sand sports or camel（骆驼）riding.
3.Polar（极地的）trips Our guides will explain everything about the two poles as you watch the penguins in Antarctica or whales and polar bears in the Arctic. It will be a once-in-a-lifetime experience!
4.▲ We organise small-group tours to get closer to nature in Africa, Asia or South America. Go on safari（游猎）in Africa and watch lions and giraffes. Look for tigers in India, or take an elephant safari in Sri Lanka. There will be local guides and a lot of ways of living, from camps to tree houses.
5.Cultural journeys You'll visit ancient buildings like temples and palaces in places like India and Egypt. Don't forget to bring your camera! Also, you can get to know local ways of life by discovering markets, meeting local people and trying their foods.
6.Trekking tours（徒步旅行）We have trekking holidays to famous places such as Machu Picchhu or the Everest Base Camp. You'll have a great time enjoying nature with a group of new friends. Some of the holidays include camping, and we will give the camps to you!
21.The writer starts to introduce the topic by in Paragraph 1.
A. telling stories B. giving examples C. asking questions D. sharing experience
22.Which of the following is the best choice to fill in the ▲ in Paragraph 4?
A. Wild-life holidays B. Beach holidays C. Local holidays D. Camping holidays
23.From the passage, we know that .
A. activity holidays are only for those who love adventure
B. there aren't guides during the polar trips
C. local people will be unhappy if you take photos during the journeys
D. people who join the trekking tours can make new friends
24.The purpose of the passage is to .
A. discover some places of interest
B. describe the meanings of exciting holidays
C. introduce ways of spending holidays
D. show the amazing beauty of some countries

( )23. From the passage, we know that ________.
A. activity holidays are only for those who love adventure
B. there aren't guides during the polar trips
C. local people will be unhappy if you take photos during the journeys
D. people who join the trekking tours can make new friends