Current location: home page education Encyclopedia of knowledge

In - (- 2), (- 1) 3, - 22, (- 2) 2, - ∨ - 2 ∨, (- 1) 2n (n is a positive integer

Try your best
Selected answers

Topic content:

Among the six numbers - (- 2), (- 1) 3, - 22, (- 2) 2, - ∨ - 2 ∨, (- 1) 2n (n is a positive integer), the number of negative numbers is () A. 1, B. 2, C. 3, D. 4

Best answer:

C

Answer analysis:

Test question analysis:

Negative Number: a number less than 0 is negative.

Positive Number: A number greater than 0 is a positive number.

The opposite of a negative number is a positive number.

The absolute value of a positive number is positive, and the absolute value of a negative number is its opposite.

－(－2)=2； (－1)3=-1；－ 22，=-4； (－2)2=4；－∣－ 2 ∨=- 2, (- 1) 2n (n is a positive integer)=1

So select C.

Comment: This question requires examinees to pay attention to the type of questions (- 1) 2n (n is a positive integer). It seems simple, but it is actually complex.

Test core:

Definition of rational number: rational number is the general name of integer and fraction. All rational numbers can be transformed into fractions.

Sunrise 2024-06-21 13:42:57

Related recommendations

You Jianhu and Qin Guan Translation of Original Text

The Song Dynasty was the peak period for the development of literary works, and many scholars left many classic works. For example, Su Shi, Li Qingzhao, Xin Qiji, Qin Guan and a large number of other outstanding poetry writers have well-known works. Visiting Jianhu [Song Dynasty] Qin Guan's painting boat, the pearl curtain rises out of the wall, and the sky wind blows to Kehe Township. Water shines into
Expand Details

Hugo's creative career can be divided into several periods

Hugo was born on February 26, 1802, in Besancon, the eastern city of France. Six weeks after his birth, Hugo went everywhere with his parents. Hugo showed great literary talent when he was young, and his later creation had a great impact. Hugo's creative career can be divided into several periods Hugo's creative career can be divided into four periods. First creation
Expand Details

What is Goethe's Young Werther's Worry

Goethe was born on August 28, 1749 to a wealthy family in Frankfurt town. When Goethe was a child, his father was very serious. On the contrary, his mother comforted and protected Goethe with gentle motherly love different from his father, encouraged and guided his interest in learning, and tried to cultivate Goethe's ability to understand literature correctly. Goethe's Young Werther's Worries
Expand Details

Li Qingzhao's Evaluation of Xiang Yu

Li Qingzhao, whose name is Yi An, reformed the style of Ci in the Song Dynasty, made great contributions to the development of Ci in the Song Dynasty, and led the development of the style of Ci in the Song Dynasty. Li Qingzhao writes excellent words, and her poetry is also unique. Li Qingzhao's poetry represents the Summer quatrain, in which "life is a hero, death is also a ghost" is a famous sentence for thousands of years, which has been handed down to today
Expand Details

Changes of Li Qingzhao's Ci Style before and after

Li Qingzhao, known as "the most talented woman for thousands of years", played an important role in the literary history of the Song Dynasty. She created a new style of poetry, brought the graceful style to the extreme, and led the development of graceful poetry in the Song Dynasty. Li Qingzhao occupies an important position in the history of classical literature, ranking first in the world, and is known as the "graceful and restrained poetry ancestor", "the country of poetry"
Expand Details

Selected recommendation More>

Although the world is safe, forget the war and be in danger

Although the world is safe, forget the war and be in danger. From Sima Rangju's Sima Fa Ren Ben in the Warring States Period: "Although the old country is big, the belligerent will perish; although the world is safe, forget the war and be in danger." The interpretation is: Although the country is strong, the belligerent will perish; Although the world is peaceful, it will be dangerous to forget the war preparations.
Idiom allusion: In 280 AD, after the destruction of the State of Wu in the Western Jin Dynasty, Emperor Wu of the Jin Dynasty, Sima Yan, believed that there would be no big war again, and advocated that military generals should not engage in military activities, but let them change their jobs to manage political and administrative affairs, and ordered the dissolution of state and county troops.
However, Du Yu, a famous military strategist, quoted the words in the ancient war book Sima Fa, and warned Emperor Wu of the Jin Dynasty: "Although the world is safe, it will be dangerous to forget the war." He could not rest easy on the demise of the Wu State. As the military commander, he returned to Xiangyang immediately after the war with the State of Wu, stuck to the key place, and staggered the garrison, so that the headquarters was heavily guarded, "as if nothing was happening", thus maintaining a stable situation for a long time.
After the death of Du Yu, Jin's armaments were lax, the horses were released to the south and weapons were put into storage, which gave the internal and external enemies an opportunity to take advantage of, and soon the world was in chaos.

It's a metaphor for two people who have the same idea

This is a metaphor for a poem in which two people have the same idea:
1. Don't worry about the future without a bosom friend. No one in the world knows you—— Tang Dynasty, Gao Shi, Farewell to Dong Daer
2. When we meet, a smile will make us cry—— Tang Dynasty, Wang Wei, Farewell to Zhao Xianzhou on Qi
3. A bosom friend in the sea is a neighbor in the world—— Tang Dynasty, Wang Bo, Farewell to Commander Du as Shuzhou
4. The body has no colorful phoenix wings, and the heart has a clear understanding—— Tang Dynasty, Li Shangyin, Untitled, Stars Last Night, Wind Last Night
5. If two people are united, the advantage will cut the gold; Concentric words stink like orchids—— Book of Changes, Part One of the Series
6. Hate is not as good as tide. Acacia begins to feel the depth of sea and Africa—— Tang Dynasty, Bai Juyi, "Waves Washing the Sand, Interrogating the River Tide and Sea Water"

Xiang Yu's Meaning

Xiang Yu (232 B.C. - 202 B.C.), male, is a descendant of Xiang State, a vassal state of the Zhou royal family, recorded in the Tang and Song classics. His surname is Ji, his surname is Xiang, his name is Yu, and he was born in Xiaxiang County, Surabaya Prefecture (today's Suqian City, Jiangsu Province). The grandson of Xiang Yan, a statesman, militarist and famous general of Chu State in the late Qin Dynasty.
Xiang Yu failed to learn books and swords when he was young, but he was ambitious against Qin. In September of the first year of the second year of the Qin Dynasty (209 B.C.), he joined Xiang Liang to fight in Kuaiji (now Suzhou, Jiangsu) in response to the uprisings of Chen Sheng and Wu Guang. After his death, Chen Sheng led the main anti Qin forces and established Xiong Xin, the grandson of King Huai of Chu, as the king. When General Zhang Han of Qin attacked Zhao, he was ordered by King Huai to lead his army to save Zhao. Because Song Yixing did not move after he arrived in Anyang, he killed him in his tent, and then led his troops to save the giant deer, and defeated the main force of Qin army. Later, Zhang Han was summoned to surrender, and 200000 Qin soldiers were killed in the pit and marched into Guanzhong. At that time, Liu Bang had already taken Xianyang as his first target. Fan Zengli, a counselor, persuaded Xiang Yu to kill Liu Bang at the Hongmen banquet, but failed. He reached a temporary settlement with Liu Bang, so he slaughtered Xianyang, killed the baby prince of Qin, burned the palace of Qin, and looted goods. In February 206 BC, Liu Bang was enfeoffed as the king of the Han Dynasty and established himself as the overlord of the Western Chu Dynasty, with Pengcheng as the capital (today's Xuzhou, Jiangsu). Soon, Tian Rong, Chen Yu, Zhao and other places raised troops against the Chu State. Liu Bang took the opportunity to pacify the Sanqin State and advance to the Western Chu State. The dispute between the Chu State and the Han State broke out. Although Xiang Yu won in the early stage of the war, he was besieged in Gaixia because of the internal contradictions caused by the enfeoffment of the princes and the inappropriate strategic decisions, and the military situation became increasingly unfavorable. Hearing that Chu songs were rising all over the country at night, he thought that the Han army had won Chu, so he broke through the siege to Wujiang River and killed himself.
As a representative figure of the "military situation" (four military trends: military situation, military strategy, military yin and yang, and military skills) of Chinese military thought, Xiang Yu is a military general famous for his outstanding force. Li Wanfang commented that "Feathers are extremely brave, which is unique for thousands of years".

Is the leader of the matter Yi or J

The radical of "Shi" is one, which was first seen in the oracle bone inscriptions of the Shang Dynasty. The original meaning of this word refers to governance and engagement; The extended meaning refers to undertakings and events; Official duties; Serving and serving; It can also refer to examples and examples.
source:
1. Book · Establishing Politics: "Appoint people, approve husbands and herd animals, and do three things."
2. Poetry, Elegance and Rain Without Integrity: "Three things doctor, don't be willing to stay up all night."
3. Chuang Tzu's Leisure Journey: "People in the Song Dynasty had a medicine that was good but not bad, and people all over the world used to swim in the river."
Sentence making:
1. This year has passed without success.
2. He hesitated to travel to Mount Tai.
3. The old headmaster devoted his wisdom and energy to education selflessly.
4. Now, more and more young people are willing to engage in environmental protection.
5. Our cause is far from exhausted.
6. Young people should have the ambition to do something.
7. Some old revolutionary comrades are healthy in their old age and continue to give play to the surplus heat for the socialist cause.
FAQ
Hotspot search
1-20
21-40
41-60
61-80
81-100
101-120
121-140
141-160
161-180
181-200

Selected Q&A

Han Yu's Educational Thoughts Where is Sun Wu from There are several giant sources in the universe Translation of the classic Chinese version of "Shining Saves the Father" Seven meter Poem of Old Age Sentiment What is the radical of Dou? Check again What is the next sentence to read yourself more and enjoy yourself Is the sun falling or not A representative figure of the Nine Leaves Poets What does it mean that a bowl of water in front of a filial son's bed is better than ten thousand piles of ash in front of his grave I have a big tree. People call it "Chuan". Where does it come from What does the Forbidden Army mean What is the fourth stroke of bird What's the next emperor of Tongzhi Emperor How can I say when I wake up when everyone is drunk Is fire a single character What is the meaning of "Hang Dang" What does it mean to be the best and easy to break Autumn is getting deeper. When I look back, what does it mean to be another season The meaning of knocking
Complete composition
1-20
21-40
41-60
61-80
81-100
101-120
121-140
141-160
161-180
181-200

About us Asking Agreement Help Center

Beijing ICP Certificate 00000 7-6 Love to ask knowledgeable people - Copyright © copyright