成牙本质细胞突起伸入釉质所形成的结构是（  ）

（  ）日前落户北京城市副中心，未来将作为全国温室气体自愿减排交易中心，以及全球绿色金融和可持续金融中心的基础设施，聚焦强化碳定价，碳量化和碳金融三大核心能力，为更多排放企业或主体提供服务。

患者膝胸位或俯卧位时腹痛可缓解，常见于（）。

理想不同于幻想和空想，具有变为现实的可能性，是经过长期努力可以实现的。这是因为

马钱子的功效是（  ）

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.

Digital dieting refers to all of the following EXCEPT_____.

适用于一切溃疡或烧伤，腐肉未脱，新肉未生之时的外治首选方是（    ）。

下列各项，不属异位妊娠的病因的是（  ）。

在《生肖的联想》一课教学中，教学难点的设置较为恰当的是（  ）。

在痛风发作的急性期，应当首选的抗痛风药是（）