藏族的基本情况是怎样的

完成句子（共20空；每空0.5分，满分10分）

小题1:He decided to devote himself to the protection of the Changjiang River.

He decided to be ________ to __________  the Changjiang River.

小题2:It’s a good idea for you to _________  ___________  ______  ______(充分利用) micro-blogging(微博) to help improve your business if you are a business man or woman.

小题3:John will ______  _______ of (负责)the next meeting.

小题4:He is always ___  ___  __(找茬)other people though he doesn’t do his own work properly.

小题5: This book is different from _____  _____  ____ I read(我昨天读的) last night.

小题6:I’ve lost my umbrella and Mary has lost her umbrella , too.

I’ve lost my umbrella and ________  _______  ________.

小题7:The mid-term exam is coming soon. The students are busy _____  _____  ___ (准备) it.

阅读下列说明，回答问题1至问题3，将解答填入对应栏内。
【说明】
一个软件产品或软件项目的研制过程具有其自身的生命周期，该生命周期要经历策划、设计、编码、测试、维护等阶段，一般称该生命周期为软件开发生存周期或软件开发生命周期(SDLC)。把整个软件开发生命周期划分为若干阶段，使得每个阶段有明确的目标和任务，使规模大、结构和管理复杂的软件开发变得便于控制和管理。

【问题1】 常见软件开发生命周期中，瀑布模型、迭代模型和快速原型3种模型各有优缺点，主要表述如下。优点：A．强调开发的阶段；B．强调早期计划及需求调查；C．强调产品测试；D．开发中的经验教训能及时反馈；E．信息反馈及时；P．销售工作有可能提前进行；G．采取早期预防措施，增加项目成功的几率；H．直观、开发速度快。缺点：

A．依赖于早期进行的需求调查，不能适应需求的变化；B．单一流程，开发中的经验教训不能反馈应用于本产品的过程；C．风险通常到开发后期才能显露，失去及早纠正的机会；D．如果不加控制地让用户接触开发中尚未测试稳定的功能，可能对开发人员及用户都产生负面的影响；

E．设计方面考虑不周全。请在上面给定的优缺点中进行判断选择。

公务员行进礼仪有哪些？

鸟类的皮肤外面具有由表皮所衍生的角质物有（），（），爪和鳞片等。

Most critical plot points in Harry Potter and the Sorcerer’s Stone came from J. K. Rowling’s imagination, but Flamel and his powerful pebble were legendary long before Harry went to Hogwarts. The 14th century alchemist created the philosoper’s stone (called "sorcerer’s" in U.S.editions of Potter ), with which he turned mercury to gold and gained eternal life. But Flamel’s tale—like his stone and his science—was no more real than a magic.

The philosopher’s stone was the key to alchemy, the medieval predecessor to chemistry that aimed to cure all illnesses, make the elixir of life, and transmute base metals into gold. The last made perfect sense at the time. The Aristotelian theory of elements stated that all things consisted of fire, air, water, and earth. So a little shift in one metal’s composition could create gold.

Flamel was renowned as an alchemical success. In 1382, after 25 years of studying an ancient book by "Abraham the Jew", he is said to have produced the philosopher’s stone. His texts, notably a deconstruction of the "Abraham" work, were standard reading for aspiring scientists like Isaac Newton.

Many alchemists believed Flamel faked his 1418 death and that of his wife. Rumored sightings in the 18^th century placed them at the Paris Opera. As late as 1816 there were reports of people searching Flamel’s former house for secrets of the stone.

Contemporary historians say, a Nicolas Flamel did live in Paris in the 1300s and endowed many churches and hospitals with his wealth. But he was no alchemist. "He got his money in pedestrian ways—his wife’s earlier marriages, real-estate speculation," says lawrence Principe, author of The Aspiring Adept. Anachronisms, style of language, and the lack of earlier copies indicate that none of "his" writings originated prior to the 1500s.

"This sort of thing happens in alchemy," says Bill Newman, author of alchemical history Gehennical Fire. When an alchemist couldn’t back up his ideas, he might publish them in the guise of a "lost" work. Flamel’s wealth made a good candidate for alchemical identity theft.

Flamel writings and sightings faded with alchemy’s prestige. And the closest anyone’s come to the philosopher’s stone is Rowling. In her hands, it has yielded not just gold but eternal (shelf) life as well.

The passage shows that alchemy in the medieval time ().

A. established modern chemistry

B. cured all the diseases

C. turned base metals to gold

D. was taken as somewhat justifiable