—He is a little ________ than you, but he is as ________ as you.

—The Nile. It is longer than ________ river in the world.

—Oh! It's one of ________ films I've ever seen.

    We all know that the panda is the treasure (珍宝) of our country. Then how about its droppings (粪便)? They are treasure, too. How?

    The panda keeper1an adult panda with about 25 kilos of bamboo every day. Of that, the panda will eat about 11 kilos — the most2parts. Because the panda cannot digest (消化) all the bamboo completely, its droppings3much of undigested (未消化的) bamboo. Can people make use of it? Sure, someone4in turning it into toilet paper.

    "In my opinion, it's a great5 ， " a panda keeper says. "In the past, we just threw away the droppings6rubbish. But now workers come and take the droppings away. They use the droppings to make7. They also make notebooks and bookmarks. "

    8 ， the paper doesn't sell well at the Panda Base. It is not popular with9. Most of them won't buy it after they visit the Panda Base. "A box of tissues (纸巾) is 43 yuan ， " they said. "That's quite10. " If you see the tissues at the Panda Base, will you buy them?

    Langshan Mountain, lying in Xinning County, is about 500 kilometers away from Changsha. It is one of China's National Geological Parks and is famous for its special Danxia landform (丹霞地貌).

    Covering an area of 108 square kilometers, Langshan Mountain has rich natural scenery and lots of tourism resources (资源). There are more than 60 scenic spots (景点) in Langshan Mountain, among which the most famous are Tianyi Lane (天一巷), Chili Peak (辣椒峰), Bajiao Stronghold (八角寨) and so on.

    On August 2nd, 2010, Langshan Mountain was recorded in the World Heritage List (世界遗产名录) and became China's eighth world natural heritage.

    If you would like to visit Langshan Mountain, you can take a bus from Shaoyang South Station to Xinning County. It will take you about 2 hours and the price of the bus ticket is 54 yuan each adult. Then you can take a taxi to Langshan Mountain. The best time to visit Langshan Mountain is from March to October.

    Arctic foxes (北极狐) live in the Arctic. They grow about 50 centimeters long, not including the tail, 30 centimeters tall and weigh from 3 to 7 kilos.

    The white ones are white in winter, but gray­brown in summer. The blue ones are blue­gray all year round. And the long fur covers their whole body to keep them warm in the low temperature in the Arctic.

    Arctic foxes mainly feed on birds, birds' eggs and other small animals. Teamwork is the way they look for food.

    Baby Arctic foxes are very lovely. They don't open their eyes until a week after their birth. They begin to look for food on their own when they are about six months old. The next year they can live alone.

    Now the number of Arctic foxes is becoming smaller and smaller, because people kill them for their fur to make beautiful coats.

从下面五个选项中选出能填入文中空白处的最佳选项。

A: ?

B: I think it is China. I really hope to visit it one day.

A: ?

B: It's hard to explain why China is my dream place. Maybe it's so different from our country.

A: I see. Will you travel to Beijing? ?

B: Sure! I can't really go there without seeing the Great Wall.

A: That's true. ?

B: I think the best time to visit Beijing may be in autumn.

A: ?

B: No, I don't like being part of a tour group. I'll go there by myself.