关于x，y的方程$\frac{x^2}{5-m}+\frac{y^2}{2+m}=1$满足下列曲线，分别求m的取值范围：

（1）焦点在x轴的椭圆；

（2）焦点在y的双曲线．

美国推行马歇尔计划的最根本的动机是（  ）

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空（不多于3个词），并将答案填写在答题卡题号为1-10的相应位置上。

    There are many great heroes in the world. For example, Gandhi, an Indian ____(nation) hero, was respected as the father of the Indian nation. He has been beloved by the Indians.

    He was born in India in 1869. ____(Follow) the local custom, he got married at the age of 13. In 1888 he sailed to England, ____ he studied law for three years and became a lawyer. On his return to India, he was sent to South Africa to work on a law case.

    In South Africa,____surprised him most was that the problem of racial discrimination (种族歧视) was serious. There he formed an ____(organize) and started a magazine to fight for equal rights.

    Gandhi returned to India in 1915, when India was controlled by the British. Under his ____(guide), the Indians ____(devote) to fighting for an end to the British rule and independence for their country. In the political movement, many Indians,____ (include) Gandhi, were put in prison. However, they struggled bravely without hesitation. The British government had to give ____ and India won its independence in 1947.____ (fortunate) Gandhi was shot by an Indian who opposed his views and died on January 30th, 1948.