Trong các mp sau đây mp nào vuông góc với mp (P): 3x - 2y +z -1 =0

A. 3x -2y +1 = 0 

B. x + y + z -7 = 0 

C. 2z - 5= 0

D. x=0 

Thiết bị trung tâm của máy tính là gì ?
A. Đĩa cứng, SSD
B. Các thiết bị ngoại vi 
C. Bộ xử lí trung tâm - bộ nhớ
D. Màn hình

1. There _____________some ways to solve this exercise 
A. to be 
B. am 
C. are
D. is 

2. Neither my gloves nor my hat______with this dress
A. is going 
B. are going
C. goes
D. go 

3. The poor living the area _______help 
A. needed 
B. are needing 
C. need
D. needs

4. A number of graduates ___________scholarships from this department.
A. have received
B. has received 
C. are received 
D. receives 

5. One of my best friends _________five credit cards
A. have 
B. has 
C. does
D. do 
---------------------

1/ Tom and I _____cousins
A. be 
B. is
C. am 
D. are 

2/ All the equipment_______made in Japan three years ago 
A. were 
B. is 
C. was 
D. are

3. So far everything ___________all right 
A. is 
B. has been 
C. have been 
D. are 

4. The people in this town _______very friendly
A. is 
B. are 
C. am
D.be 

5. The ideas in that book__________interesting 
A. is
B. are
C. am
D. be

6. Both his parents and he ________here now 
A. are 
B. is 
C. was 
D. were

1/ Tom and I _____cousins
A. be 
B. is
C. am 
D. are 

2/ All the equipment_______made in Japan three years ago 
A. were 
B. is 
C. was 
D. are

3. So far everything ___________all right 
A. is 
B. has been 
C. have been 
D. are 

4. The people in this town _______very friendly
A. is 
B. are 
C. am
D.be 

5. The ideas in that book__________interesting 
A. is
B. are
C. am
D. be

Tag question

1/ They must be here as soon as possible ,____________?

2/ That's the shop where you used to work, _____________?

3/ Lima is the capital of Peru,___________?

4/ There's nothing on TV tonight,__________________?

5/ That's the guy that won the pools,______________?

Trong thí nghiệm giao thoa ánh sáng đơn sắc của Young, khoảng cách hai khe là 0,6mm, khoảng cách hai khe tới màn là 2m. Trên một khoảng rộng 2,8cm thuộc miền giao thoa quan sát đc 15 vân sáng và hai đầu là hai vân sáng. Bước sóng của ánh sáng đơn sắc đó là bao nhiêu ?

A. 5,6.10^-5m

B. 0,6\(\mu\)m

C. 5,6​\(\mu\)m ​

D. 6.10^-6m

TAG QUESTION

1. Mary hardly ever cooks,__________?

2. Nothing went wrong,______________?

3. There was no panic,________________?

4. The Smiths need two cars,_____________?

5. People have to rebuild the building after fire,__________?

6. Someone broke into your house last night, ___________?

7. Neither of them offered to help you,_____________?

8. Lives were lost unnecessarily,______________?

Tag question 

1. Somebody will be there soon,_______________?

2. Everybody is happy,________________?

3. She's had too much to do lately,______________?

4. It won't happen,__________?

5. They must be here as soon as possible,____________?

Tag question 

1/ She looks tired,_______________?

2. There's a cinema near the station,___________?

3. It's time to go,___________?

4. Everybody looked so miserable,______________?

5. You wouldn't do that,______________?