古巴前领导人卡斯特罗称：“全球化是客观现实，它显示了在这个大家庭居住的星球上我们都是同一条船上的乘客。一小撮乘客居住在豪华的客舱，85%的乘客拥挤在不卫生的船舱里。很显然，这艘船上不公正的事太多了，它很难浮在水面上。它的航程是如此不合理和荒唐，以至它不可能抵达安全的港口。”卡斯特罗在此意在表达(    )

    Time for an adventure?

    Are you a hit bored with your nine - to - five routine? Have a look at our exciting range of holidays and decide what type of adventure you'd like.

    Activity holidays

    Our activity holidays are for everyone, people who love danger or who just like sports. We have a huge variety of water, snow or desert holidays. We'll take you SCBA diving in the Red Sea or kayaking and white water rafting in Canada. If you prefer snow, you can try skiing or snowboarding in the Alps or even igloo — building. For those who like warmer weather, we also have sandboarding (the desert version of skateboarding) or camel safaris.

    Polar expeditions

    Take a cringe to Antarctica or the northern Arctic; explore a Land of white natural beauty and wonderful wildlife. Our experts will explain everything about the two poles as you watch the penguins in Antarctica or whales and polar in the Arctic, There's no greater adventure than travelling to the ends of the earth. A once-in-a-lifetime experience.

   ultural journeys

    Our cultural journeys will help you discover ancient civilizations: India, Thailand, Egypt and many more. Visit temple, palaces and ancient ruins ~just remember to bring your camera! Get to know local ways of life by exploring markets, trying exotic foods and meeting local people.

    Wildlife holidays

    We organize small - group tours to gel closer to nature in Africa, Asia or South America. Go on safari in Africa and watch lions and giraffes. Meet the famous turtles off the Galapagos Islands. Look for tigers in India, or take an elephant safari in Sri Lanka. We use local guides and stay in a range of accommodation, from tents to trees houses.

用盐水选种时，需要配制密度为1.063×10³ kg/m³ 的盐水.现已有500 mL的盐水，其质量为0.52 kg，要达到上述要求，采取的方法是（   ）