于老师在讲台上把一张纸揉成团，把另一张纸烧成灰，由此让学生来理解物质的物理变化和化学变化的区别，于老师采用的教学方法是（）。

根管扩大的注意事项，除外

患者，女，51岁。既往有食管炎病史，绝经超过2年，潮热、出汗、情绪易起伏，出现骨痛且劳作后疼痛加重，临床检查骨密度T值-2.8，诊断为绝经后骨质疏松症、绝经综合征。该患者不宜选用的治疗药物是（    ）

Passage1

When it comes to airline travel, perhaps nothing has revolutionized the passenger experience more than airline apps. Indeed, they' re becoming so ubiquitous that more than 50 percent of U.S travelers have at least one airline app installed on their smart device, according to travel industry research firm Phocuswright.

Maybe that's because apps make travel easier, and often are more functional than a kiosk or even an airline's own website. Passengers report that they' re often more quickly informed of a flight cancellation or gate change than an airline employee. Not all airline apps are created equal, but in general you can use an app to check in for a flight, change seats, and request and pay for an upgrade. Road warriors in particular appreciate mobile boarding passes and the ability to track their flights. Many airlines now offer free onboard streaming entertainment via apps. The Delta Air Lines app even allows users to track their bags, from check-in to carousel, while the Air France app lets passengers download magazines and newspapers from the airline's library 30 hours prior to departure.

But what if you are traveling extensively on more than one airline? Global airline alliances have their own apps that allow you to view flights for all member airlines and their affiliates, including code share flights. In general, you can find flight schedules for all member airlines and track member airline flights. Airport information is available, as are details about local weather at the destination. Where's the nearest airport lounge? The app will locate it for you.

The Sky Team airline alliance app goes a step further by letting its SkyPriority members (Sky Team Elite Plus members and customers with first and business-class tickets) find out exactly which SkyPriority services-including priority check in and baggage drop off, as well as access to priority security lanes and boarding lanes-are available at individual airports.

You' ll find that some alliance app features are available through multiple channels of communication. For example, Sky Team members have formed their own online community by sharing traveler tricks and airport tips accessible through a variety of channels, including the app, Sky Team's website, Facebook page and a dedicated tips site. Sky Team's YouTube page features travel tips from regional celebrities.

Just as airlines seem to have conquered social media, another method of communicating with travelers has just arrived. KLM Royal Dutch Airlines is the first carrier to sign up for Facebook's Messenger chat app. KLM flyers can automatically receive itineraries, flight updates, check-in notifications, boarding passes and rebook flights and communicate with customer service, all from Facebook Messenger. Messenger for Business was launched so that customers-in this case, passengers-can transact business over the messaging app in a single communication thread. Roughly 80 percent of passengers on planes traveling within the U.S. have the Messenger app installed on their smartphones, according to Facebook.

Clearly, mobile apps and social media have transformed our digital lives. Airlines favor apps and other technologies because they get customers out of airport lines and off phone lines. Through their smart devices, travelers now have untethered access to travel information. A few quick taps can supply individuals with information never dreamed possible even a decade ago. And with more people using smartphones as their primary computing device, and as more people own cellphones globally, people expect technology-driven methods of communication and convenience to accelerate. Whether you' re high-tech or not, you must admit that having immediate access to the information you need sure beats getting a busy signal on a toll-free phone line.

Which of the following reflects what the author intends to convey?

A 制药厂是经药监局批准建立的一民营药厂，主要生产阿司匹林片。为节约生产成本，经与 B 化工厂协商，由 B 化工厂利用其现有水杨酸等化工原料，生产乙酰水杨酸作为其生产阿司匹林片的原料，而 B 化工厂并未获得有关部门审查批准可以生产药品原料。案发之日，B 化工厂已向 A 药厂供应乙酰水杨酸 5 吨，获利 3 万元；A 药厂利用该批原料生产出阿司匹林片若干批，价值 6.5 万元，尚未售出。A 制药厂将会受到以下法律制裁，除了（）

（  ）有权对基金管理人的投资行为进行监督。

关于基金经理和投资经理的说法，错误的是（  ）。

不属于行政许可原则的是（    ）

与呼吸关系密切的两脏是（    ）。

窝洞侧壁与牙面相交构成洞的边缘称（  ）。

财务报表分析的对象是（ ）。