History
Which emperor unified China, declared himself the "First Emperor," and ordered the large-scale construction of the Great Wall?
A) Emperor Wu of Han
B) Qin Shi Huang
C) Emperor Taizong of Tang
D) Emperor Taizu of Ming
B) Qin Shi Huang
The FIFA World Cup, the world's largest single-sport event , it takes place every how many years?
4 years
In mammals, which cell is primarily responsible for binding and transporting oxygen, contains hemoglobin, and consequently makes the blood appear red?
Red Blood Cell
In △ABC, the lengths of the three sides are a=5,b=6, c=7 If point I is the incenter (the center of the inscribed circle) of △ABC,and the radius of the inscribed circle is r, what are the area of △ABC and the radius r?
Area = 6√6,r=⅔√6
Which of the following elements exists in a liquid state at room temperature and pressure?
A) Mercury (Hg)
B) Iron (Fe)
C) Sulfur (S)
D) Phosphorus (P)
A) Mercury (Hg)
During the French Revolution that broke out in 1789, which prison symbolizing royal oppression did the Parisian crowds storm, officially marking the beginning of the revolution?
Bastille Prison
In Major League Baseball (MLB), when a pitcher strikes out three consecutive batters in a single inning using "only 9 pitches" to complete the inning, what is this extremely rare record called?
A) Perfect Game
B) No-Hitter
C) Immaculate Inning
D) Hit for the Cycle
C) Immaculate Inning
In cell biology, what organelle is known as the "powerhouse of the cell," primarily responsible for conducting aerobic respiration and producing the cell's main energy currency, ATP?
Mitochondrion
Given that sin θ =⅗ , and θ is in the first quadrant, find tan θ = ？
¾
Which of the following reactions is an exothermic reaction （ΔH < 0）？
A) Photosynthesis
B) Ice melting
C) Combustion reaction
D) Electrolysis of water
C) Combustion reaction
The fuse for World War I was the assassination of which Austro-Hungarian heir on the streets of Sarajevo?
A) Wilhelm II
B) Alexander II
C) Archduke Franz Ferdinand
D) Nicholas II
C) Archduke Franz Ferdinand
Among the four Grand Slam tennis tournaments, which one is the oldest, the only one played on "grass courts," and strictly requires all competing players to wear "all-white clothing"?
Wimbledon Championships
The blue whale is the largest living mammal in the world, and scientists generally believe it is also the largest known animal to have ever existed on Earth. What is its main food source among the following tiny organisms?
A) Whitebait
B) Jellyfish
C) Krill
D) Planktonic Algae
C) Krill
Calculate log₂ 8 + log₂(½) =
2
Given that the H-H bond energy is 436 kJ/mol , Cl-Cl bond energy is 242 kJ/mol ,and H-Cl bond energy is 431 kJ/mol,calculate the H₂ + Cl₂ → 2HCl 的 ΔH：
-184 kJ/mol
In ancient Mesopotamia, what is the oldest surviving written code of law, issued by the Babylonian king and famous for the principle of "an eye for an eye, a tooth for a tooth"?
Code of
In the track and field events of the modern Olympic Games, what is the "first" event on the two-day schedule of the men's Decathlon, which is praised as the "King of Athletes"?
100-Meter Dash
Gregor Mendel, revered as the "Father of Genetics," discovered core laws of inheritance, such as the Law of Segregation and the Law of Independent Assortment, in the mid-19th century through long-term hybridization experiments on which plant?
Pea
Calculate the definite integral ∫₀² (3x² − 2x) dx = ？
4
For an acetic acid buffer solution, pKa=4.76.If [CH₃COONa]/[CH₃COOH]=2 , what is the pH?
5.06
In 1453 AD, Constantinople, the capital of the Byzantine Empire (Eastern Roman Empire), fell and the empire collapsed. Who was the Ottoman Turkish Sultan leading the army at that time?
A) Suleiman I
B) Mehmed II
C) Selim I
D) Sultan Aladin
B) Mehmed II
In the world-renowned Tour de France, the overall leader wears a yellow jersey. What style is the jersey that symbolizes the highest points in mountain stages, commonly known as the "King of the Mountains"?
A) Green Jersey
B) White Jersey
C) Polka Dot Jersey
D) Pink Jersey
C) Polka Dot Jersey
In neurobiology, the structure that transmits signals between neurons is called a synapse. Compared to chemical synapses, what is the type of synapse that is composed of "gap junctions" and allows ions to flow directly through channels to achieve extremely high-speed signal transmission?
A) Electrical Synapse
B) Mechanical Synapse
C) Neuromuscular Junction
D) Inhibitory Synapse
A) Electrical Synapse
For a geometric sequence, the first term a₁ = 2 ,and the common ratio r =⅓ ,Find the sum of the infinite series S=?
3
When a benzene ring already has an –OH substituent and undergoes electrophilic aromatic substitution, which position is the new substituent most likely to enter, and why?
A) Meta-position, because –OH is an electron-withdrawing group.
B) Ortho- and para-positions, because –OH donates electrons through the resonance effect.
C) Only enters the para-position, because the steric hindrance at the ortho-position is too large.
D) Randomly distributed, as –OH has no effect on the activity of the benzene ring.
B) Ortho- and para-positions, because –OH donates electrons through the resonance effect.