某数学老师在引导学生计算“圆锥体侧面积”的教学中，站在讲台上面向学生展示了一个圆锥体模型，使学生清楚地观察到从圆锥体模具上揭下来的那张侧面是一个扇形。教师采用的这种教学方法是（  ）。

贴剂中由无刺激性和无过敏性的黏合剂组成，如天然树胶、合成树脂等的是（   ）

中国现存最早的喜剧片是（）。

把学生分成若干组，通过教师的指导和组长的协助，在同一时间内，使各组学生分别进行不同教材的练习，并按预定的时间和顺序交换练习的内容的教学组织形式是（ ）。

脉搏短绌正确的测量方法是（     ）

健康管理的首要步骤一般是

请阅读 Passage l,完成第 21~25小题。

Passage 1

"THE SERVANT"(1963) is one of thosefilms that it is impossible to forget. The servant exploits his master'sweaknesses until he turns the tables: the story ends with the a cringing masterministering to a lordly servant. It is hard to watch it today without thinkingof another awkward  rela-tionship-the onebetween business folk and their smartphones.

Smart devices are sometimes empowering.They put a world of information at our fingertips. But for most people theservant has become the master. Not long ago only doctors were on call all thetime. Now everybody is. Bosses think nothing of invading their employees '  free time. Work invades the home far morethan domestic chores invade the office.

Hyperconnectivity exaggerates the declineof certainty and the general cult of flexibility. Smartphones make it easierfor managers to change their minds at the last moment. Employees find it ever harderto distinguish between "on-time" and "off-time"—and indeed between realwork and makework. None of this is good for businesspeople ' s marriages ormental health. It may be bad for business, too. When bosses change their mindsat the last minute, it is hard to plan for the future.

How can we reap the benefits ofconnectivity without becoming its slaves? One solution is digital dieting.Banning browsing before breakfast can reintroduce a small amount ofcivilization. Banning texting at weekends or, say, on Thursdays, can reallyshow the iPhone who is boss.

The problem with this approach is that itworks only if you live on a desert island or at the bottom of a lake. LesliePerlow of Harvard Business School argues that for most people the only way to breakthe 24/7 habit is to act collectively rather than individually. One of theworld's most hardworking organisations, the Boston Consulting Group, introducedrules about when people were expected to be offline, and encouraged them towork together to make this possible. Eventually it forced people to work moreproductively while reducing burnout.

MsPerlow' s advice should be taken seriously. The problem of hyperconnectivitywill only get worse, as smartphones become smarter and young digital natives takeover the workforce. But ultimately it is up to companies to outsmart thesmartphones by insisting that everyone turn them off from time to time.

The author mentions the film in the first paragraph in order to _____ .

下列最符合幼儿的注意力发展特点的是（    ）

企业2018年1月售出产品并已确认收入，2018年5月发生销售退回时，其冲减的销售收入应在退回当期记入（　）科目的借方。

男，30岁。B超可见肾上盏结石0.6cm，经解痉、中西药治疗和大量饮水后出现尿频、尿急、尿痛，现结石的位置应在（    ）。