阅读材料，回答问题

材料一：2016感动中国人物秦玥飞，耶鲁大学毕业。①大学毕业时，秦玥飞选择回祖国农村服务，至今已6年。现任湖南衡山福田铺乡白云村大学生村官，②“黑土麦田”公益组织（帮助大学生村官和村民创业发展的平台）联合发起人。他改善灌溉系统、建现代化敬老院，为乡村师生开展信息化教学……③他说“成功不可能一夜间发生，必须脚踏实地一步步去做。”

材料二：2017年是第十二届全国人大及其常委会履职的最后一年，立法工作任务十分艰巨。要按照立法主动适应改革和经济社会发展的要求，坚持将党中央确定的、全面深化改革急需的立法项目作为重中之重，优先安排。

填空完成人的生殖与发育过程（写出数字所代表的结构名称）：

①____②____③____④____．

完形填空

    I've got some information for everyone who is going to Britain next month. As you know, you are  1  with a family for two weeks. Now the most important thing is  2  . You should take about ￡30 in cash(现金) and about ￡200 in traveler's cheques(支票). Then when you  3  at the airport you'll meet your host family. You must remember to wear a red shirt so the family will find you  4  . I've told them to look for the red shirt. You'll also  5  to take with you four photos of yourself.  6 is very important for you to take the school letter. While you are there,  7  you have any problems, you can call our agent(代理人). I'll give you her office  8 now. It's 580-4436 and the person to ask for is Mrs. Belcher. She's in the office  9  9 am to 5 pm every day. OK! That's everything. Enjoy 10  during the stay in England.

如图所示，A、B两物体的质量分别为m_A和m_B，且m_A＞m_B，整个系统处于静止状态，滑轮的质量和一切摩擦均不计，如果绳一端由P点缓慢地向右移动到Q点，整个系统重新平衡后，物体A的高度和两滑轮间绳与水平方向的夹角θ如何变化（   ）