Hãy liệt kê 1 số chuỗi thức ăn trong mạng lưới thức ăn

Chia động từ trong ngoặc về thể bị động thì quá khứ đơn.

1. My homework ( finish) _____________ before 7 p.m yesterday.

2. The accident ( cause_____________ by this man

3. The apple juice ( drink) _____________ by my sister .

4. This meal ( prepare) _____________ by my mother.

5. This box ( not open) _____________ .

6. The cake (cut) _____________into 8 pieces.

7. The criminal ( sentence) _____________ three years in prison.

8. This postcard ( send) _____________ Italy by my Italian friend.

9. These rings ( make) _____________ of gold.

10. This organization (found) _____________ by a businessman 3 years ago.

11. Many songs ( sing) _____________ on the New year’s Eve.

12. Fireworks (set off) _____________ to celebrate the Independent Day.

13. Three people ( rescue) _____________ from the raging fire by the firefighter.

14. _____________ ( you/bear) on August 29?

15. These dresses ( sell out) _____________ in a few minutes.

16. My old chair ( throw) _____________ away by my father.

17. When _____________ ( your house/ build)?

18. The famous actor ( not regconize) _____________ when he went shopping yesterday.

19. Everone ( surprise) _____________ by her victory.

20. This event ( witness) _____________ by millions of people.

Dựa vào những từ cho sẵn, viết câu bị động ở thì hiện tại đơn.

1. My house/ make from/ wood .

2. These eggs/ not lay/ by my hens.

3. Morning exercises/ do/ Jim/ everyday.

4. The dogs/ feed/ jane/ every day.

5. Letters/ deliver/ mailman/ everyday.

6. Vegetables/ grow/ in the fields/ farmers.

7. Cattle / raise/ farm workers.

8. Many diseases/ cure/ by surgery/ nowadays.

9. National heritages/ preserve/ the government.

10. The architectural features of the house/ carefully study/ architects.

Khoanh tròn vào đáp án đúng.

1. English is ( speak/ spoken) in many countries.

2. I (am not/ don’t) allowed to stay out too late.

3. These flowers are (watered/ waters) everyday by my mother.

4. The housework (are/ is) done by both of my parents.

5. The food ( is preparing/ is prepared) by Jane.

6. My mother ( is bought/ buys) me new clothese every month.

7. Mr Vu is (admiring/ admired) by many people.

8. May difficult exercises ( are done/ are doing) easily by Jim.

9. The air ( is polluted/ is polluting) by smoke from factories.

10. My glasses are ( broke/ broken).

11. These trees ( are planted/ are plants) by local people.

12. This report ( is typed/ typed) by my assistant.

13. English ( is studying/ is studied) by students at schools.

14. Cheese ( is made/ makes) from milk.

15. Breakfast is prepared ( by/ from) my mother everyday.

Bài 1:Hoàn thành các câu sau với dạng so sánh hơn của tính từ trong ngoặc:

1.Living in the city is________than living in the country(convenient).

2.Mrs.Smith is_________than I thought.(young).

3.Houses in big cities are much_________than those in my hometown(tall).

4.No one in my class is_________than Jim (smart).

5. The senior prom would be_________than any other proms(exciting).

6. I have__________courage than my brother(little).

7. His health condition is getting__________(bad).

8.You are_________than you think(clever).

9.This computer is much_________than mine(expensive)

10.I always dream of a__________house to live in(modern).

Bài 2; Gạch chân lỗi sai trong mỗi câu sau và sửa lại cho đúng:

1.Their life has been more comfortably since they moved to the city.

2.She looks more pretty in this white dress.

3.The manager wants us to work more hardly.

4.This week you looks more healthily than last week.

5.Everyone in my town is looking for more better crop this year.

6.Jim runs more fastly than his friends.

7.I think a settle life is more better than a nomadic life.

8.Today Jim performs less confident than usual.

9.The heavy rain makes it more difficultly to drive.

10.Their team preformed much more well than our team.

Cho 12g hỗn hợp : Fe&Cu 400ml dd HCl vừa đủ sau p/ứ thu đc 2,24(l)khí H2 (đktc) . Tính thành phần % theo khối lượng của mỗi kim loại trong hỗn hợp ban đầu

Trung 200ml dd NaOH 2M bằng 100ml dd HCl 2M . Tính nồng độ mol của dd thu đc sau p/ứ

Hòa tan hết 3,2(g) Fe2O3 bằng 200g dd H2SO4

a. Tính nồng H2SO4 đã dùng

b.Tính nồng độ % của dd sau p/ứ