Chủ đề:
Bài 18: MolCâu hỏi:
1.O,4 mol Fe3O4
2.O,5 mol CaCO3
3.O,6 mol CaSO4
4.O,7 mol AgNO3
5.O.8 mol H2SO4
6.O,9 mol HCL
7.O,10 mol KmnO4
I.Fill in the blanks with suitable prepositions.
1.It's very kind.........you to say so.
2.In this respect, French difers..............English.
3.Don't you care.........your country's future?
4.Please fill..........this from.
5.She enjoys participating.........raising funds for the poor.
6.Could you help me.........the clean-up?
7.Are you going to take part.........this contest?
8.This restaurant is famous...........its Chinese dishes.
IRearrange the following sentences to make a sensibly dialogue.
......Đó you want to send it by airmail or surface mail.?
.......Oh!That's too expensive.
........All right
.........Excuse me.I'd like to send this parcel to Ha Noi.
........That's better.I'll send it surface.
.........How much is airmail?
..........Surface mail is cheaper.It's only 22,000 dong.
...........I'll have to weigh the parcel first.Four kilograms.That will be 43,500 dong.
I.Underline and correct the mistakes in the following sentences.
1.I'd like sending these postcard to American.................
2 She is quite different with her mother.................
3.He isn't enough strong to carry this suitcase.
4.My family has lived here in 1975.............
5.We have knew each other since we were children.............
6.Shopping in the mall is more comfort................
7.They didn't meet him since last year..................
8.I've been waiting for him since two hours...............
I.Give the correct form of the words in brackets.
1 He is one of the best............in the world.(photograph)
2 Their first public............was not very successful.(perform)
3 The shoes were nice,but they were................(comfort)
4 .Hoa and Nien used to be next-door.............(neighborhood)
5.Surface mail is much............than airmail.(cheap)
6.I can't see him now;it's not.............(convenience)
7.They are very busy with...........the Teachers'Day.(celebrate)
8.Nam thinks the food in this restaurant is..............(taste).