人们所肯定和赞赏的血性，应当属于性格评价和审美取向的范畴。血性是个________而又朴拙的词汇，本身就具有张力和亢奋色彩。因此在理解和使用上应该有所________，否则就会混淆粗犷与________、豪壮与莽撞、文明与野蛮、人性与兽性。

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    People's hobbies aren't always the same. They change with many things. Here are some examples:

Age

    Hobbies change with your age. When you're a kid, you may be interested in playing games, collecting toys etc. When you study at school, you may be interested in sports, pop music and movie stars. When you're old, you may be interested in chatting and listening to Beijing Opera.

Job

    Hobbies change with people's jobs. Teachers may like staying with their students. Doctors may like all kinds of medicine. Drivers may like all kinds of vehicles and athletes may like all kinds of sports games.

Season

    Hobbies change with seasons. People may have different hobbies in different seasons. In spring, you may like flying kites. In summer, swimming is a good choice(选择). In autumn, you may like to go hiking and in winter, skating must be great fun.

“积一勺以成江河，累微尘以崇峻极。”这句话告诉我们，培养坚强的意志要（     ）

年均积温2500℃—3000℃，无霜期120—160天，生长期内日照时间13—16小时/天，灌浆期满足日间均温在23℃至25℃之间，且昼夜温差超过13℃，加上深厚肥沃的土壤（有机质含量超过3﹪），才能产出优质寒地粳米。据此回答下列各题。