Fara là điện dung của một tụ điện mà

Antonyms: This project brings together researchers to study how confusion can assist digital learning.

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.

Which of the following is NOT a reason for creating sock puppets?

Các cuộc cách mạng công nghiệp thời cận đại đã dẫn tới sự hình thành của hai giai cấp nào? 

Cho tập hợp A = $\{x \in \mathbb{N}$ | $x$ là ước chung của $30$ và $54\}$. Tập $A$ viết bằng cách liệt kê các phần tử là

Cho các tập hợp:

A = {x ∈ ℤ | -4 ≤ x ≤ 5};

B = {x ∈ ℤ | -2 ≤ x ≤ 6};

C = {x ∈ ℤ | 0 ≤ x ≤ 1}.

Xác định tập hợp X = (A ∩ B)\C. Câu nào sau đây đúng?

Hi Amanda,

How's everything with you? In your last email, you wanted to know about my family routines. We do a few things regularly that I really enjoy.

a. We walk around our neighbourhood, greet our neighbours, and sometimes stop to buy ice cream. It's a great way to relax after a long day.

b. I think these routines make our family happier and help us spend more time together. I'd love to hear if your family has similar traditions.

c. Third, once every two weeks, we watch a movie at home. We choose the film together, make popcorn, and turn off all the lights to make it feel like a cinema.

d. Second, every Sunday morning, we cook a big breakfast. My dad fries eggs, my mum makes pancakes, and I prepare fresh fruit. We take our time eating and talking.

e. First, my family goes for a walk together every evening after dinner.

Looking forward to your reply.

Best wishes,

Denrick

Vai trò của vật nuôi trong việc bảo vệ sức khỏe con người và môi trường là

Nhận định nào sau đây không đúng với tài nguyên thiên nhiên?

Trong thiên nhiên cây tre có thể sinh sản bằng cơ quan nào?

Choose A, B, C or D to answer each question.

Which of the following situations best exemplifies “caution” where someone takes care in order to avoid danger or mistakes?

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. Sally: I’m really sorry for being late. I didn’t mean to keep you waiting.

b. Sally: I overslept this morning and missed the last bus. Luckily, a stranger gave me a ride

c. Janna: Don’t worry about it at all. But tell me, what happened to you?

Tìm GTLN của \(F(x;y) = x - 3y\), với điều kiện \(\left\{ \begin{array}{*{35}{l}} x\ge 0 \\ 0\le y\le 5 \\ x+y-2\ge 0 \\ 3x-y\le 6 \\ \end{array} \right.\)?

Cho hai tập hợp $A=\left\{ 1;2;3;7 \right\}\text{,}\ B=\left\{ 2;4;6;7;8 \right\}$. Mệnh đề nào sau đây đúng?

Mệnh đề nào sau đây đúng?

Fluorine và hợp chất của nó được sử dụng để làm chất chống sâu răng, chất cách điện, chất làm lạnh, vật liệu chống dính,... Nguyên tử fluorine có chứa 9 electron và có số khối là 19. Tổng số hạt proton, neutron và electron có trong nguyên tử fluorine là

Xác định đâu là ý đúng: Có mấy loại nét vẽ?

Nguyên tử iron (sắt) có 26 proton.

a) Điện tích hạt nhân của nguyên tử iron là .