Đạo luật nào giữ vai trò quan trọng nhất trong các đạo luật giải quyết khủng hoảng kinh tế của Mỹ?

Cho các vectơ \(\vec a = (1; - 2),\vec b = ( - 2; - 6),\vec c = (m + n; - m - 4n)\). Tìm góc tạo bởi hai vectơ \(\vec a,\vec b\)?

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?

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 questionsfrom 13 to 17.

a. These centers provide structured courses with experienced teachers, interactive activities, and access to diverse learning resources.

b. As a result, students can improve their English skills more effectively compared to self-study.

c. Studying at an English center offers numerous advantages for learners seeking to enhance their language proficiency.

d. Furthermore, English centers create an immersive environment where students can practice speaking and listening in real-life situations.

e. In conclusion, enrolling in an English center is a great way to develop language skills in a systematic and engaging manner.

Read the following passage about How Failures Led to Breakthroughs 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 23 to 30.

Many important discoveries happened because of mistakes and unexpected accidents. Alexander Fleming found penicillin when he left his laboratory messy before going on holiday. After vacation, he saw mold growing on his experiment plate. Fleming noticed this mold killed bacteria around it very effectively. This fortunate accident later saved millions of lives around the world. Scientists call finding valuable things by chance "serendipity," which happens often in research.

The Post-it Note began as a mistake that seemed useless at first. In 1968, Spencer Silver tried making a strong glue for 3M company but created a weak one instead that didn't stick permanently. Nobody knew what to do with this disappointing result for several years. Then his colleague Arthur Fry realized this "failure" could make perfect bookmarks that wouldn't damage pages when removed. This weak adhesive eventually became one of the most popular office products worldwide, changing how people work.

In cooking, many favorite foods came from kitchen errors and quick substitutions. Ruth Wakefield invented chocolate chip cookies when she ran out of baker's chocolate and used broken pieces of semi-sweet chocolate instead. She thought they would melt completely in the dough, but they kept their shape during baking. Potato chips were created when chef George Crum made extremely thin potatoes to annoy a customer who repeatedly complained about thick fries. Surprisingly, the customer loved them and ordered more!

These fascinating stories teach us that mistakes can lead to new opportunities and unexpected innovations. Thomas Edison said about his many failed light bulb attempts, "I haven't failed. I've just found 10,000 ways that don't work." This positive attitude shows we should see errors as valuable learning chances. Smart people don't fear making mistakes in their work; they fear missing opportunities to learn from them and discover something amazing.

In which paragraph does the writer mention how Thomas Edison viewed his failures?

Đơn vị nào là đơn vị đo của lực?

Ngôn ngữ Python được ra mắt lần đầu vào năm nào?

Đồ thị vận tốc - thời gian của chuyển động thẳng đều là một đường thẳng

Một loài thực vật, mỗi cặp gen quy định một cặp tính trạng, alen trội là trội hoàn toàn. Cho cây thân cao, hoa đỏ giao phấn với cây thân thấp, hoa trắng (P), thu được F₁ có 100% cây thân cao, hoa đỏ. Cho F₁ giao phấn với nhau, thu được F₂ có 4 loại kiểu hình, trong đó có 9% số cây thân cao, hoa đỏ thuần chủng. Biết không xảy ra đột biến nhưng có hoán vị gen ở cả đực và cái với tần số bằng nhau. Theo lí thuyết, có bao nhiêu phát biểu sau đây đúng?

I. Ở F₂ có 24% số cây mang 3 alen trội.

II. Ở F₂ có 34% số cây mang 2 alen trội.

III. Lấy ngẫu nhiên một cây thân thấp, hoa đỏ ở F₂, xác suất thu được cây thuần chủng là 1/4.

IV. Lấy ngẫu nhiên một cây thân cao, hoa đỏ ở F₂, xác suất thu được cây thuần chủng là 9/59.

Có mấy căn cứ khi lựa chọn nghề nghiệp trong lĩnh vực kĩ thuật?

Từ nào sau đây diễn tả chính xác cuộc đời của nhà thơ?

Although he knew very little about linguitics, he pretended________an expert in the field.

Read the following passage about humanoid robots and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

Gary Hall Jr,_______(18), was an excellent swimmer from a young age. People were amazed at his incredible speed, and he competed at a very high level. However, life didn't make things easy for him and he had to overcome major challenges to achieve his success.

By the age of 22, Gary had already competed at the 1996 Summer Olympics in Atlanta, Georgia, USA,_______ (19). Gary was so happy and excited about his career. Then, when he was 24 years old, his doctor told him that he had a health condition called type 1 diabetes, and that he might not be able to continue swimming. Gary was devastated, but after a short break, he decided he wouldn't give up and continued to train with all his strength. ______(20)

A year later, at the 2000 Olympics in Sydney, Australia, Gary gave an amazing performance and won four more medals: two golds, a silver and a bronze. He continued his career and competed at the 2004 Olympics in Athens, Greece, where he won another gold and a bronze medal.

According to Gary, being too young in 1996 and having a health condition in 2000, _______(21). In 2004, people doubted him because they thought he was too old. However, he proved that they were wrong.

_______(22) . I admire him because he didn't give up, even when he was exhausted struggling to train and compete. With his determination, he achieved great success. From his story, we can all learn an important life lesson: "To be successful, you must try your best and believe in what you can do”.

Hiệu điện thế giữa hai điểm M, N là U_MN = 40 V. Chọn câu chắc chắn đúng:

Each of the following sentences has one error (A, B, C, or D). Find it and blacken your choice on your answer sheet.

After dogs, the cats have had the closest relationship with humans.

Sao lưu cơ sở dữ liệu từ máy tính nguồn bằng cách?

Phương án nào sau đây là một phần mềm độc hại?

Khi ăn cà chua hoặc hành chưng trong mỡ, cơ thể người có thể hấp thụ được những loại vitamin nào sau đây?

Nguyên nhân xuất hiện cục diện hai chính quyền song song tồn tại ở Nga sau cách mạng tháng Hai là gì?

Thực hiện giao thoa Young với hai bức xạ λ₁ = 0,4μm; λ₂ = 0,5μm. Biết khoảng cách giữa hai khe sáng là 2mm. Khoảng cách từ mặt phẳng chứa hai khe tới màn M là D = 2m. Khoảng cách từ vân tối thứ 3 của bức xạ λ₁ và vân sáng thứ 5 của bức xạ λ₂ ở cùng một phía so với vân trung tâm là bao nhiêu mm? (viết dưới dạng số thập phân)

Bất phương trình nào sau đây là bất phương trình bậc nhất hai ẩn?