The problem: Answer a question about this article:
According to the Institute of Russian Language of the Russian Academy of Sciences, an optional acute accent (знак ударения) may, and sometimes should, be used to mark stress. For example, it is used to distinguish between otherwise identical words, especially when context does not make it obvious: замо́к/за́мок (lock/castle), сто́ящий/стоя́щий (worthwhile/standing), чудно́/чу́дно (this is odd/this is marvelous), молоде́ц/мо́лодец (attaboy/fine young man), узна́ю/узнаю́ (I shall learn it/I recognize it), отреза́ть/отре́зать (to be cutting/to have cut); to indicate the proper pronunciation of uncommon words, especially personal and family names (афе́ра, гу́ру, Гарси́я, Оле́ша, Фе́рми), and to show which is the stressed word in a sentence (Ты́ съел печенье?/Ты съе́л печенье?/Ты съел пече́нье? – Was it you who ate the cookie?/Did you eat the cookie?/Was it the cookie that you ate?). Stress marks are mandatory in lexical dictionaries and books for children or Russian learners.
What can optional acute accents indicate?
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The answer: stress


Problem: Please answer a question about the following article about Circadian rhythm:
Mutations or deletions of clock gene in mice have demonstrated the importance of body clocks to ensure the proper timing of cellular/metabolic events; clock-mutant mice are hyperphagic and obese, and have altered glucose metabolism. In mice, deletion of the Rev-ErbA alpha clock gene facilitates diet-induced obesity and changes the balance between glucose and lipid utilization predisposing to diabetes. However, it is not clear whether there is a strong association between clock gene polymorphisms in humans and the susceptibility to develop the metabolic syndrome.
Beside obesity, how else does the lack of a circadian clock effect   the mice?
A: glucose metabolism


Question: Read this and answer the question

Chopin's original publishers included Maurice Schlesinger and Camille Pleyel. His works soon began to appear in popular 19th-century piano anthologies. The first collected edition was by Breitkopf & Härtel (1878–1902). Among modern scholarly editions of Chopin's works are the version under the name of Paderewski published between 1937 and 1966 and the more recent Polish "National Edition", edited by Jan Ekier, both of which contain detailed explanations and discussions regarding choices and sources.

Who released the first collection of Chopin's works?
Answer: Breitkopf & Härtel


Problem: The causes of the Franco-Prussian War are deeply rooted in the events surrounding the unification of Germany. In the aftermath of the Austro–Prussian War of 1866, Prussia had annexed numerous territories and formed the North German Confederation. This new power destabilized the European balance of power established by the Congress of Vienna in 1815 after the Napoleonic Wars. Napoleon III, then the emperor of France, demanded compensations in Belgium and on the left bank of the Rhine to secure France's strategic position, which the Prussian chancellor, Otto von Bismarck, flatly refused. Prussia then turned its attention towards the south of Germany, where it sought to incorporate the southern German kingdoms, Bavaria, Württemberg, Baden and Hesse-Darmstadt, into a unified Prussia-dominated Germany. France was strongly opposed to any further alliance of German states, which would have significantly strengthened the Prussian military.
What was the effect of that new group on the European balance of power?
The answer is the following: new power destabilized


Widespread rumors of Napoleon's return from St. Helena and Napoleon as an inspiration for patriotism, individual and collective liberties, and political mobilization manifested themselves in seditious materials, displaying the tricolor and rosettes. There were also subversive activities celebrating anniversaries of Napoleon's life and reign and disrupting royal celebrations—they demonstrated the prevailing and successful goal of the varied supporters of Napoleon to constantly destabilize the Bourbon regime.
Rumors of Napoleon's return from what location were often used as an inspiration for his followers?
St. Helena


Here is a question about this article: While the use of iron started to become more widespread around 1200 BC, mainly because of interruptions in the trade routes for tin, the metal is much softer than bronze. However, very small amounts of steel, (an alloy of iron and around 1% carbon), was always a byproduct of the bloomery process. The ability to modify the hardness of steel by heat treatment had been known since 1100 BC, and the rare material was valued for the manufacture of tools and weapons. Because the ancients could not produce temperatures high enough to melt iron fully, the production of steel in decent quantities did not occur until the introduction of blister steel during the Middle Ages. This method introduced carbon by heating wrought iron in charcoal for long periods of time, but the penetration of carbon was not very deep, so the alloy was not homogeneous. In 1740, Benjamin Huntsman began melting blister steel in a crucible to even out the carbon content, creating the first process for the mass production of tool steel. Huntsman's process was used for manufacturing tool steel until the early 1900s.
What is the answer to this question: Heat treatment of steel has been know since what time?
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So...
1100 BC