Khi nói về dao động cơ tắt dần của một vật, phát biểu nào sau đây đúng?

Giấy clorua côban khi ướt sẽ có màu hồng, khi khô có màu xanh sáng. Người ta ép giấy tẩm clorua côban khô vào hai mặt lá khoai lang. Theo bạn kết luận nào dưới đây là chính xác?

Thế năng của một electron tại điểm M trong điện trường của một điện tích điểm là $-4,{8.10}^{-19}\left(J\right)$. Điện thế tại M là

Lisa: There is a music concert next weekend. – John: That sounds great! Who __________ there?

Cho hàm số y = f(x) có đồ thị như hình vẽ:

Khẳng định nào sau đây là đúng?

Theo sông suất, người ta chia điện trở làm mấy loại:

Mark the letter A, B, C or D 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. Minh: Really? Thank you so much!

b. Hoa: Hi, Minh! Your new haircut looks great!

c. Minh: Hi, Hoa!

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.

The  word  “beat”  as  used  in  the  first  paragraph  could  be  best  replaced  by  which  of  the following?

Cho các tập hợp $G=\{x \in \mathbb{R} \mid-12 \leq x \leq 21\} ; H=\{x \in \mathbb{R} \mid 0 \leq x \leq 17\}$

a) \(G = \left[ { - 12\,;\,21} \right]\).

b) \(H = \left[ {0;17} \right]\).

c) \(G \subset H\).

d) \(H \subset G\).

Một người bắt đầu cho xe máy chạy trên một đoạn đường thẳng. Trong 10 s đầu xe chạy được quãng đường 50 m, trong 10 s tiếp theo xe chạy được 150 m. Tốc độ trung bình của xe máy trong 20 s đầu tiên là bao nhiêu?

Đâu là ý đúng: Cả carotenoit và diệp lục có đặc điểm?

Xâu kí tự trong Python là?

Hiện tượng biến tính protein là hiện tượng gì?

Nhiệt độ có độ lớn là 0,01 ^oC được gọi là nhiệt độ

Con hãy lựa chọn đáp án Đúng hoặc Sai

Bài thơ Tự tình được trích từ tập Lưu Hương kí, đúng hay sai?

Read the following passage about studying abroad 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.

Successful students often do the followings while studying. First, they have an overview before reading. Next, they look for important information and pay greater attention to it (which often needs jumping forward or backward to process information). They also relate important points to one another. Also, they activate and use their prior knowledge. When they realize that their understanding is not good, they do not wait to change strategies. Last, they can monitor understanding and take action to correct or “fix up” mistakes in comprehension.

Conversely, students with low academic achievement often demonstrate ineffective study skills. [I] They tend to assume a passive role in learning and rely on others (e.g., teachers, parents) to monitor their studying. [II] For example, low-achieving students often do not monitor their understanding of content; they may not be aware of the purpose of studying; and they show little evidence of looking back or employing “fix-up” strategies to fix understanding problems. [III] Students who struggle with learning new information seem to be unaware that they must extend effort beyond simply reading the content to understand and remember it. [IV] 

Children with learning disabilities do not plan and judge the quality of their studying. Their studying may be disorganized. Students with learning problems face challenges with personal organization as well. They often have difficulty keeping track of materials and assignments, following directions, and completing work on time. Unlike good studiers who employ a variety of study skills in a flexible yet purposeful manner, low-achieving students use a restricted range of study skills. They cannot explain why good study strategies are important for learning; and they tend to use the same, often ineffective study approach for all learning tasks, ignoring task content, structure or difficulty.

According to paragraph 3, which of the following is NOT MENTIONED about children with learning disabilities?

Trong khu vực Đông Nam Á, dân số nước ta xếp thứ 3 sau quốc gia nào?