鹿角形结石引起泌尿道的病理生理改变，最严重的后果是：

新来的赵老师为树立威信，对幼儿要求十分严格，总是因为一些小的纪律问题训斥幼儿。关于赵老师，下列说法错误的是（）。

宋朝把改换审判官重新审理称为(    )。

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.

Smart devices have become the master mainly because______

普莱尔在三年里每天三次对其子进行长期观察，并辅之简单实验，完成其心理发展报告，从研究设计上看，属于（　　）。

当远期合约价格大于近期合约价格时，称为正常市场或正向市场。（  ）

引起继发性腹膜炎的细菌最多见的是(    )。

女孩，15岁。发现甲状腺肿大1个月。查体：可触及双侧甲状腺弥漫性肿大，质软，无压痛，双眼突出。实验室检查：T₃、T₄升高，TSH0.001mIU/L，TRAb（+）。该患者首选的治疗是（     ）。

患者，女，23岁。痛经9个月，经行不畅，小腹胀痛，拒按，经色紫红，夹有血块，血块下后痛即缓解，脉沉涩。治疗应首选（    ）

我们平常所说的乱班属于（　　）。

在某研究设计中，用方便分组的方式，将被试分为一个实验组和一个控制组，对两组均进行了一次前测和后测。该设计是（　　）。