按要求用下面的词语写两个句子。

①建议（放在句子的中间）：

②建议（放在句子的末尾）：

阅读下列短文，从每小题的三个选项中选出最佳选项。

    Hello, I'm Ann. This is my family. There are five people in my family. My grandparents are old. They are teachers. My father is tall. He has a white shirt. He is a fireman. He is not afraid of fire. He can help people. He likes his job. My mother is tall and beautiful. She has long hair. She has a yellow skirt. She is a nurse. I don't have any aunts. What about you?

利比亚战争，不仅给利比亚造成了巨大经济损失，也给全球经济复苏蒙上阴影。这说明（   ）

下列说法正确的是（    ）。

山地和丘陵的共同点是（    ）