根据短文内容，选择正确答案。

    A lot of boys and girls in west countries are wearing the same kinds of clothes: Many of them have long hair, so it is often difficult to tell whether they ate boys or girls.

    One day, an old man went for a walk in Washington. When he was tired he sat down on a long chair. A young person was standing on the other side of the pool.

    “Good Heavens!” the old man said to the person who was sitting next to him on the chair. “Do you see that person with long hair? Is it a boy or a girl?”

    “A girl.” said his neighbor, “She's my daughter.”

    “Oh!” the old man said quickly, “I'm sorry. I didn't know that you were her mother.”

    “I'm　not,” said his neighbor, “I'm her father.”

一辆汽车停在水平地面上，一个人用力水平推车，但车仍然静止，下列说法中正确的是（   ）

如图所示，长L=8m，质量M=3kg的薄木板静止放在光滑水平面上，质量m=1kg的小物体放在木板的右端，现对木板施加一水平向右的拉力F，取g=10m/s²，求：

趣味计算题

（1）1+2+3+4+5+…+99

（2）28×1111+8×9999．

 材料  2008年是凸显中国形象的一年，中国同世界各国共同应对金融危机，在气候变化、能源、粮食等全球性问题加强与各国的合作，在解决朝核问题、伊朗核问题、津巴布韦、达尔富尔问题上发挥了建设性的作用，派遣舰队到索马里海域护航等。

请回答：

请结合当今时代的主题和中国外交政策，分析说明中国上述举措的意义。