Cacbohidrat X có đặc điểm

- Có thể tham gia phản ứng thủy phân trong môi trường axit

- Không tham gia phản ứng tráng bạc

- Phân tử gồm nhiều gốc β⁻ glucozơ

Cacbohidrat X là

A. Tinh bột

B. Xenlulozơ 

C. Saccarozơ

D. Glucozơ

Cho các chất X, Y, Z, T đều tác dụng với H₂SO₄ và thỏa mãn sơ đồ: Fe(NO₃)₂ → X → Y → Z → T. Mỗi mũi tên ứng với một phản ứng. Các chất X, Y, Z, T lần lượt là

A. FeS, Fe(OH)₂, FeO, Fe.

B. FeCO₃, FeO, Fe, FeS.

C. FeCl₂, Fe(OH)₂, FeO, Fe.

D. FeS, Fe₂O₃, Fe, FeCl₃.

he was sixteen

27.   Ba and Phong came to the meeting last night.
Who__did come to the meeting last night ?___________________

What did Ba and Phong come to last night ?

28.   It takes 5 hours to get to Hong Kong by plane.

How .__long does it take to get to Hong Kong by plane ?_____________________________________________

29.  She has been sick for three days.

How  '___long has she been sick ?__________________ —--—------------------------

3O.   Lien was late for school because the traffic was heavy.

why          did Lien was late for school ?                     
 

13.              Thu can get there in only 10 minutes.

How ' -. .       can Thu get there only 10 minutes ?              
​Còn mấy câu nữa mai làm nốt nhé ^^

21.   They are talking about their summer vacation.
What____are they talking about ?______________ —-—'-—~

22.                The students should talk to their teacher about their project.
Whom__________________________________________

23.That car is my teacher's.

Whose____car is that ?_____________________________________

24.   Ba likes to eat bean soup.

What kind___of soup does Ba like to eat ?_____________________________________

25.   The Pikes are going to visit Thailand and Vietnam.
What___are The Pikes going to visit ?_________________ .__________________

16.   You can find some colored pencils in that drawer.
Where___can I find some colored pencils ?_

17.   She usually travels to Hanoi by plane.

How____does she travel to Hanoi ?____________________

18.                 It's about 320 kilometers from HCM City to Nha Trang.
How____far is it from HCM city to Nha Trang ?_______ :_________________________________________________________

19. Ms Loan has taught in this school for five years.

How___long has Ms Loan taught in this school ?_____________________________________________

20.    This coat costs 100.000 dong.

How____much does this coat cost ?
How much is this coat ?________________ .___________ —------------------

6.            My mother has worn "ao dai" since she began her career as a teacher.
What_____has your mother worn since she began her career as sa teacher ?____________________________________________

7.            She borrowed some of my English books.

Whose______has borrowed some of my English books ?___________________________________________

8.   Lan has just bought a pair of sandals made in China.

What kind____of sandals has Lan bought made in China ?_________________________ ._______________

9.   His rudeness made his friends angry. What made his friends angry?

10.   Phong is very kind and friendly. What is Phong's character ?