“窃泰西各国，越重洋数万里来至中土，……，不啻出入户庭；至于遣将调兵，处分军事，虽悬隔山海，而如指掌，则尤以……之枢也。”利于当时列强侵略最为便捷的是

某小组围绕“蚯蚓在什么样的物体表面爬得快”的问题，讨论并制订了如下计划：

背景知识：蚯蚓生活在潮湿、疏松、富含有机物的土壤中。它的身体由许多体节构成，体表湿润并且有许多粗糙的刚毛。蚯蚓依靠肌肉和刚毛运动。

请你将小组计划的探究内容补全：

其中，实验数据：

下图为某国等高线地形图，读图回答问题。

阅读短文，回答问题。

Dear Amy,

   I want to 1 your friend. Let me introduce my family to you. My father is a doctor. He is tall 2 strong. My mother is a teacher. She is think and kind. My brother Sam is 6 years old. He's short and funny. We 3 in a big city. However, we usually go 4 on the weekends. I have a small and nice room. There is a bed and a desk in my room. I like reading books. I have many books 5 my desk. Welcome to my home.

                                                                                                                                                                        Yours,

                                                                                                                                                                          Lucy