Trong điều kiện thích hợp , cặp chất nào sau đây không xảy ra phẩn ứng : A . Cl2 + NaOH B. K2CO3+NaOH C. Fe2O3+CO D. K2CO3+Ba(OH)2

Thuyết minh về một bài thuốc gia truyền hay mà em biết Giúp mình với ạ TuT Viết đoạn văn

Diện tích hình tam giác vuông có độ dài 2 cạnh góc vuông là 2,5 m và 16 dm là : A.2m ² B.4 m ² C.4,1m ² D.0,9m ² giúp mk nha ! 5*

Các anh chị giúp em với ạ Tìm tất cả các số nguyên n để phân số $\frac{4n+5}{5n+4}$ có thể rút gọn được

Giúp mik bài này với các bạn giúp mik câu 1 nhé

tính B=2-4+6-8+.....+48-50 giải thik chi tiết từng bước giải xong mik vote 5 sao cảm ơn nhiều ạ

16 Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. A: cloudy B: harmful C: unique D: slowly 17 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits blank (17). My village is about 50 kilometers from the city center. It is a very (17)________place where people plant flowers and vegetables only. It is very famous for its pretty roses and picturesque scenes. The air is quite fresh, however, the smell of the roses make people (18)________ cool. In spring, my village looks (19)________ a carpet with plenty of colors. Tourists come to visit it so often. Nowadays, with electricity, it doesn’t take the villagers much time to water the roses. A: beauty B: beautifully C: beatify D: beautiful 18 Choose the best answer A, B, C or D to complete the sentence. Question12. An old woman was ________ the goats up the mountainside. A: talking B: riding C: herding D: running 19 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) to each of the following questions. Question15. The Thai worship their ancestors. Every year they hold festivals and ceremonies with alternating songs between boys and girls, and many traditional games. A: fathers B: grandfathers C: forefathers D: grandparents 20 Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question16. Thanks to the guide, we’ve learnt a lot of interesting information about the ethnic groups in Viet nam. A: exciting B: challenging C: fascinating D: boring

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21 Choose the underlined part A, B, C or D that needs correcting. Picture 2 A: A B: B C: C D: D 22 Choose the best answer A, B, C or D to complete the sentence. Question11. Life in a small town is _______ than that in a big city. A: peaceful B: much peaceful C: less peaceful D: much more peaceful 23 Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question14. In the kitchen Mom: “Pour the cooking oil into the pan, wait to heat it before frying something” Daughter: “____________” A: It’s good B: It’s not true C: You’re welcome D: I see 24 Choose the best answer A, B, C or D to complete the sentence. Question8. Don’t worry. It is _______ to travel to that village even at night. A: difficult B: unsafe C: inconvenient D: safe 25 Choose the underlined part A, B, C or D that needs correcting. Picture 3 A: A B: B C: C D: D