关于基因治疗的叙述，正确的是

一贫血患者，疑诊为MDS，下列哪项最有诊断价值

关于实现担保物权案件，下列哪一个选项是正确的？（        ）

《中国药典》规定药屑及杂质通常不得过（ ）

细菌细胞壁的功能不包括

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 example of Boston Consulting Group is used to illustrate that _____.

不含消化酶的消化液是（）。

丁丁和乐乐课间发生争吵，老师未能及时制止，丁丁气急之下击打乐乐耳部，导致乐乐失聪。在此事件中应当承担责任的是 ( )。

下列有关伤寒肥达反应的描述，正确的是

下列哪项目前不属于腹腔镜手术适应证(     )

治疗癥瘕痞块、顽痰久咳宜选用（ ）