Câu 3: Biết năm 2021 ở nước ta, dân số nam là 49 092 700 người, dân số nữ là 49 411 700 người. Tính tỉ lệ giới tính nam của nước ta năm 2021 (làm tròn kết quả đến một chữ số của phần thập phân của %).

Cho $A=\left[ 1;4 \right],\ B=\left( 2;6 \right)$ và $C=\left( 1;2 \right)$. Xác định $X=A\cap B\cap C.$

Bạn An phát biểu: "Tích các số liên tiếp từ 1 đến 30 không chia hết cho 1 000 000". Phát biểu của An đúng hay sai?

Mặt bằng của ngôi nhà:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34. Foot-racing is a popular activity in the United States. It is seen not only as a competitive sport but also as a way to exercise, to enjoy the camaraderie of like-minded people, and to donate money to a good cause. Though serious runners may spend months training to compete, other runners and walkers might not train at all. Those not competing to win might run in an effort to beat their own time or simply to enjoy the fun and exercise. People of all ages, from those of less than one year (who may be pushed in strollers) to those in their eighties, enter into this sport. The races are held on city streets, on college campuses, through parks, and in suburban areas, and they are commonly 5 to 10 kilometers in length. The largest footrace in the world is the 12-kilometer Bay to Breakers race that is held in San Francisco every spring. This race begins on the east side of the city near San Francisco Bay and ends on the west side at the Pacific Ocean. There may be 80,000 or more people running in this race through the streets and hills of San Francisco. In the front are the serious runners who compete to win and who might finish in as little as 34 minutes. Behind them are the thousands who take several hours to finish. In the back of the race are those who dress in costumes and come just for fun. One year there was a group of men who dressed like Elvis Presley, and another group consisted of firefighters who were tied together in a long line and who were carrying a fire-hose. There was even a bridal party, in which the bride was dressed in a long white gown and the groom wore a tuxedo. The bride and groom threw flowers to bystanders, and they were actually married at some point along the route.

Which of the following is NOT implied by the author?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

Who are you?

On 6 June 2011, the media reported the kidnapping of a female Syrian-American blogger called Amina Arraf. Regarded as a daring political rebel, the 35-year-old had gained popularity for her blogs protesting the lack of freedom in Syria. Yet, only two days later, it was discovered that Amina had never existed. She was a fictional character created by Tom MacMaster, a forty-year-old American PhD student at the University of Edinburgh.

MacMaster's invention is an example of sock puppetry: the use of false identities to deceive others. (I). The false identity is known as a sock puppet, and its creator, a puppet master. (II). MacMaster created Amina to express his views on Middle Eastern affairs without offending other Americans. (III). Writing as Amina gave him the authority to say what he wanted. (IV).  

At the turn of the millennium, Debbie Swenson created Kaycee Nicole, a fictional teenage girl suffering from terminal cancer. Her blog, Living Colours, described Kaycee’s struggle, attracting millions of readers. When Kaycee 'died' on 14 May 2001, her fans were devastated. Their distress turned to anger when they discovered that Kaycee was not real. Swenson had developed the character to gain attention and sympathy.

While Amina and Kaycee were used to meet their creators' needs, other identities have been invented for profit. American gun advocate John Lott made up a fake student, Mary Rosh, to defend his writing online and give him positive reviews. Mystery writer RJ Ellory fabricated a team of sock puppets to praise his own books and tear into those of his rivals. British historian Orlando Figes lost credibility when he had to publicly apologise for doing the same.

Yet none of these stories compare to large-scale sock puppetry today. The New York City Police Department has false identities on social media to catch criminals. The US military is believed to use sock puppets to track potential terrorists. It is clear that the internet is a minefield today and we all have to step very carefully in order not to get hurt.

Where in paragraph 2 does the following sentence best fit?

" But this is not the only reason for sock puppetry."

Những công nghệ nào sau đây thuộc về công nghệ xử lý chất thải trong chăn nuôi

Cho \(P\left( x \right)\): "\({{x}^{2}}-x-2=0\)" với \(x\) là các số thực.

Em hãy cho biết điện cực của Tranzito là:

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a.      Mark: Well, we have the client meeting on Thursday, so we should prepare the presentation first. I think we should focus on that today.

b.      Mark: Hey Anne, we need to organize our tasks for this week. Do you have a minute?

c.       Anne: Sure, Mark! I was just going through my to-do list. What should we prioritize?

Một xilanh chứa 120cm³ khí ở áp suất 2,5.10⁵Pa. Pittông nén khí trong xilanh xuống còn 60cm³. Coi nhiệt độ không đổi. Áp suất khí trong xilanh lúc này có giá trị là             

Nhóm cây ôn đới bao gồm các loại cây có nguồn gốc ở nơi có khí hậu:

Chủ tịch xã X tiến hành xử lí hành vi lấn chiếm đất trên hành lang bảo vệ đê điều để xây nhà ở của gia đình ông K. Trong trường hợp này, chủ tịch xã X đã dùng hình thức thực hiện pháp luật nào để xử lí công việc?

Một vật được thả rơi tự do. Lấy gia tốc rơi tự do là 9,8 m/s². Hỏi trong giây thứ ba kể từ lúc được thả rơi thì vận tốc của vật đã tăng lên bao nhiêu?