1. (2019·荆门) 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

    Canada shares the longest international border (边界) in the world with the USA, which is 8,891 km long. The longest part of the border is shared with the US state, Alaska, and it is about 2,475 km long. Here is more information about Canada.

Geography	★the largest waterfalls, Niagara Falls ★the second biggest country in the world, after Russia ★the highest mountain, the Mount Logan with a height of 5,959 m ★the longest river, the McKenzie River in the northwest, 4,241 km long ★a large country with a small population
Attractions for kids	★going boating in the national parks, enjoying skiing, snow-boarding and other winter fun activities in the mountains ★outdoor activities: riding, climbing and ice-skating in Toronto, Vancouver and so on ★interesting museums and wonderful city parks

1. （1） How long is the longest border that Canada shares with Alaska?

   A . 8, 891 km. B . 2, 475 km. C . 4, 241 km. D . 5, 959 m.
3. （2） The largest country in the world is ________.

   A . China B . Canada C . the USA D . Russia
5. （3） Which of the following statements is true?

   A . The height of the Mount Logan is 5,959 kilometers. B . The McKenzie River lies in the northeast of Canada. C . Canada is a large country which has a small population. D . Kids can't go ice-skating in Vancouver.