Hòa tan 7,8 gam 1 kim loại A có hóa trị I vào nước. Sau khi phản ứng thu được 2,24 lít khí Hidro ở đktc. Xác định tên Kl A?

Tìm giá trị nhỏ nhất của;

a, C = (x²+5x+4)(x+2)(x+3)

b. D= (x-1)(x-3)(x²-4x+5a)

Giải thích nghĩa đen về mặt sinh học của câu tục ngữ : Căng mắt ra mà nhìn

Thuyeetss minh về Đền Đô Bắc Ninh

Hãy nêu yêu cầu thành phẩm của việc gói bánh chưng

Cho mình xin mấy cái slides về chủ đề The important of studying art and music với ạ!! Cố giúp mih nhé

Mô tả cơ chế của phản xạ run? Từ đó cho biết phản xạ run có ý nghĩa j?

Tìm và sửa 1 lỗi sai trong mỗi câu

1. It would be both noticed and appreciating if you coul finish the work before you leave

2. A calorie is the quantity of heat required to rise one gallon of water one degree centigrade at one atmospheric pressure

3. Vietnam Airline regrets informing passengers that flight VN 254 to Hanoi is postponed due to bad weather

4. The number of time he spends gardening is increasing every day

5. The suits were hanged in the clodet when they were returned from the cleaners

6. Thirteen-year-olds not spend as much money as their parents suspect - at least not according to the finding of a recent survey, Money and Charge

7, The survey included three hundred teenagers, 13 - 17 years old, from all over British

8. By the time they reach their teens, most children see its weekly allowance rise dramatically to amazing national average of $5.14

9. Two thirds think they get enough money, but most expect doing something to get it

10. Although they have more cash, worry about debt is increasing between teenagers

11. Therefore, the majority of children do an effort to save for the future

12. Greater access to cash among teenagers does not, however, mean that they are more irresponsible as result

13. The economic recession seems to have encouraged cautions attitudes to money, even in the case of children in these ages

14.instead of wasting what pocket money they have on sweers or magazines, the 13 - year - olds took part in the survey seem to respond to the situation by saving more than half of their cash

Chia Đt

1. After a dinner (give) by the President of an Afican nation, a ( 2. distinguish) diplomat complained to his host that the Minister of Justice, who ( 3. sit) on his left, (4. steal) his gold watch. " He (5.not/do) that" said he President. " I (6.get) it back for you". Surely enough towards the end of the evening the watch (7. return) to its owner. "And what he (8.stay) asked the diplomat. "Shh!" said he host, (9.lance) anxiously at him. " He doesn't know that I (10.get) it back

II.

1. His brother .... (give) a car for his twentieth birhday next year

2. The house was very quiet when I got home. Everybody...(go) to bed

3. Less than half of the cans of paint (use) up to now.

4. (Write) the letter, she put it carefully in an evelop

5-6. Can you imagine what I (come) across when I (roll) up the carpet yesterday

7. He talked as if he (know) whare she was

28. If you go to England, you'll have to get usde to (drive) on the left

29. You may feel frightened when you are in a forest (surround) by tall trees

30. -You have just missed the bus . - All right. I(walk)