giup em voi

anh oi giup em voi

Câu 3: Nêu cấu tạo nguyên tử. Vẽ sơ đồ cấu tạo nguyên tử kali. 

Câu 4. Viết tên và kí hiệu hóa học của: a/ 16 kim loại. b/ 10 phi kim.

Câu 1: Hóa học là gì?

Câu 2: Chất có ở đâu? Cho ví dụ.

Câu 3: Nêu cấu tạo nguyên tử. Vẽ sơ đồ cấu tạo nguyên tử kali. 

Câu 4. Viết tên và kí hiệu hóa học của: a/ 16 kim loại. b/ 10 phi kim

6.     We go swimming on the river last week.                                                                                          ……………………………………….

III. Choose the underlined word or phrase that needs correcting.

1. I'd like sending these poscards to America.

                      A        B          C               D

2. The new shopping mall is quite different with the present shopping area.

            A                                 B                C                                      D

3. She is a lovely girl.  I have known her for January.

                         A                       B              C        D

5. We are going to cleaning the banks of the lakes on weekends.

       A   B        C           D

6.     Our father used to smoking when he was young.          ……………………………………….

7.     She studies English so as to going abroad.          ……………………………………….

8.     He has hair short dark.          ……………………………………….

9.     She asked me keep silent.          ……………………………………….

10.  They’re interested in do something different                     . ………………………………….

11.  My book is the same of yours.          ……………………………………….

12.  I have met him in the street last night         ……………………………………….

III- Fill in the blanks with a suitable preposition.

The new shopping area is different ____ present one.

My dad usually watches news on TV______ Sunday evening.

What can I do _____ you?

He never gest up ______ 7 a.m _____ Sunday morning.

She likes jogging ____ the morning.

He started his new job _____  July 5^th.

Children often have a bath _____ going to school

Her mother died ____ a rare cancer.

Scouting began ____ England _____ 1907

She often hears some strange noise ____ midnight.

Does it rain ____ Spring?

Try to learn the meaning of the words ____ heart.

That’s very kind ___ you to help us.

You can participate ____ other programs

25.We have waited for you ____ an hour.

26.  Her parents are proud ____ her.

27.  We must be there ____ 7.30 and 8.30.

28.  We have known each other _____ January.

29.  We have learnt English ____ four years.

30.  We have not seen her _________ last Christmas.

31.  The goods in the new stores will be the same _____ the ones in the small shops.