dịch dùm tớ bài này nhé

over the past few years, memes-usually images or videos with text often meant to be funny or sarcastic in nature-have become one of the most popular ways, along with photos and videos, that youth communicate on social media. While some of that communication can be positive, allowing teenagers to explore their own identity development and find a sense of belonging, it can also get teens in trouble.
Sharing videos, images and memes creates the opportunity for an instantaneous positive feedback loop that can perpetuate poor decision making. In an environment where teens spend around nine hours using some form of oline media every day, it doesn't take long for them to be influenced by an "all-about-likes"sense of values that can potentially lead to life-altering decisions.
Many teens use shortened versions of their name or aliases for finsta accounts, which they often see as an opportunity to share a less edited, less filtered version of their lives, Thet might spend a lot of time trying to capture the perfect integeal photo for the "rinsta" which reaches a wider general audience, while a finsta might reveal, as one high school sophomore girls declare, "my innermost thoughts." Like the teens in the harvard facebook group chat, those using finsta accounts can have a false sense of confidence to say and do

Chứng minh 2 n 2 ( n   + 1 )   -   2 n ( n 2   +   n   -   3 )  chia hết cho 6 với mọi số nguyên n.

Mark the letter A,B,C,  or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

We didn’t want to spend a lot of money. We stayed in a cheap hote

A. In stead of spending a lot of money, we stayed in a cheap hotel.

B. In spite of spending a lot of money, we stayed in a cheap hotel

C. We stayed in a cheap hotel, but we had to spend a lot of money.

D. We didn’t want to spend a lot of money. We stayed in the cheap hotel

Use the words given to fill in the blanks. There is one extra word that you do not need to use.

    We all are destroying the Earth. The seas and rivers are too (1).......................... to swim in. There is so much smoke in the (2) ................................ that it is unhealthy to live in many of the world's cities. In one well-known city, for example, poisonous gases from car (3) ............................. the air so much that policemen have to wear oxygen masks. We have cut (4)......................... so many trees that there are now vast areas of wasteland all over the world. As a result, farmers in parts of Africa cannot (5) ......................... enough to eat. In certain countries in Asia there is so little rice. Moreover, we do not take enough care of the countryside. Wild animals are (6) ............................. disappearing. For instance, tigers are rare in India now. Because we have killed too many for them to survive. However, it is not so simple to talk (7) .............................. the problem. We must act now before it is too late to do anything about it. Join us now. (8) ..................the Earth.

Question 5:

Cho dãy các chất sau: glixerin trinitrat, nhựa bakelit, xenlulozơ trinitrat, nhựa phenol-fomanđehit, amilozơ, thuỷ tinh hữu cơ, xenlulozơ, chất béo. Số chất trong dãy không phải polime là:

A. 2     

B. 3 

C. 4     

D. 5 

Cho tam giác ABC có AH là đường cao kẻ từ A. Biết góc B bằng 50 ° . Khi đó số đo góc (BAH) là:

A.  40 °

B.  50 °

C.  45 °

D.  60 °

Một vật dao động điều hoà, trong thời gian 1 phút vật thực hiện được 30 dao động. Chu kì dao động của vật là 

A. 2 s.

B. 0,5 s

C. 1 s.

D. 30 s

Cách nói trên điện thoại có điểm gì giống và điểm gì khác cách nói chuyện bình thường :

Dựa vào cuộc nói chuyện giữa Tường và Bố, em hãy nhận xét: cách chào hỏi, độ dài của lời nói.

Giải bài toán :

Trang trại có 150 con dê và con cừu, số con cừu nhiều hơn số con dê là 30 con. Tìm số con dê, số con cừu trong trang trại đó.

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