H2SO4+......-----> .......+CO2

I. Choose the best answers.

1. English__________ from a Proto-Indo-European language about 5,000 years ago.

A. derives B. derived C. is deriving D. has derived

2. Since 2005, India__________ the world’s largest English-speaking population.

A. has B. is having C. had D. has had

3. The United Kingdom__________ of Great Britain and Northern Ireland.

A. consists B. is consisted C. has consisted D. consisted

4. English__________ around the world by children in school as a foreign language.

A. has learned B. is learning C. is learned D. learned

5. You’d better go to bed early tonight. The plane__________ at 6 o’clock tomorrow morning so we’ll have to be up by 4.30!

A. will leave B. leaves C. leave D. is leaving

6. Over the past five years, Australia’s population__________ by 1.86 million people.

A. increases B. is increasing C. has increased D. is increased

7. I’m sorry. I can’t meet up this weekend. We__________ to Wales on Friday.

A. go B. are going C. will go D. has gone

8. In the 16th century, French and British settlers__________ in Canada.

A. arrive B. have arrived C. was arriving D. arrived

9. __________ that there are no wild snakes in Ireland?

A. Do you know B. Are you knowing C. Elave you known D. Did you know

10. The Statue of Liberty, an American Symbol of freedom, __________ in France.

A. actually made B. was actually made C. has actually made D. makes actually

11. The Disney World__________ in the City of Orlando, which is in the State of Florida.

A. locates B. is locating C. is located D. located

12. Nowadays, Canada__________ against the influence of the foreign cultures, especially of the us one.

A. struggled B. is struggling C. was struggling D. has struggled

13. Indian Disney Channel__________ Tom and Jerry Kids at 7 pm.

A. shows B. is showing C. is shown D. has shown

14. My family__________ in Chicago for more than 20 years.

A. live B. are living C. were D. have been

Cho mình bt chia ở thì nào nha

cho các oxit sau Al2O3 ,FeO,Fe2O3,Fe3O4,PbO,ZnO,MgO.viết pthh(nếu có )khi các oxit trên pư vs 

a.H2

b,CO

c.C

vẻ đẹp cảnh dân chài ra khơi đánh cá đc thể hiện trong những câu thơ nào?phân tích cảnh đó

Oxi hóa hết 22,4 g kim loại X (chưa bt hóa trị) ta thu đc 32g oxit kim loại X .Tìm X

Oxi hóa hết 22,4 g kim loại A (hóa trị III) thu đc 32g Oxit kim loại.Lập CTHH của oxit kim loại đó

Đốt cháy hoàn toàn 13,5g hỗn hợp A gồm C và S trong O2 thu được 11,2(l) khí hỗn hợp gồm CO2 và SO2 (đktc).Tính m mỗi chất trong hỗn hợp A

Chứng minh rằng đoạn 3 của bài thơ nhớ rừng có thể coi là một bức tranh tứ bình lộng lẫy

hãy chọn 2 câu thơ hay nhất trong bài thơ " Ông đồ" để phân tích