1+2+3=6

k nhaLê Thị Thu Hương

thanks bn nhiều

5 số nha bn tk nha

Headache is a very common disease. The symptoms (1)…….. a headache are various. People may (2)……….. pains only one side of the head. Sometimes when the pain goes away, the head is sore. People have a headache (3) …………. they work too hard or they are too nervous about something. (4)……….. can help cure the disease but people usually have to do more than taking tablets. They can prevent headaches by changing their diets or their (5)…………… or simply by going to bed.

1. A. on B. in C. of D. at

2. A. be B. have C. happen D. take

3. A. when B. but C. so D. and

4. A. Medicine B. Doctor C. Sport D. Fruit

5. A. life B. lifestyles C. hobbies D. working

P/S : Good Luck
~Best Best~

2. Choose the best option to complete each sentence. Circle A or B.

3. Choose the best option to complete each sentence. Circle A, B, or C.

1. ________ the way to school, I can see a “No parking” sign.

2. His car crashed into the traffic ________.

3. Go to the end of this street, turn left and take the first ________ on the right. The school is on your left.

4. – What does this road _________ mean?

– It means “School ahead”.

5. Can you see the “Speed ________”? You can’t drive fast in this area.

1. Choose the word whose underlined part is pronounced differently from the others’. Circle A, B, C, or D.

lộn , xin lỗi nha :

Giá rau tháng 2 là 100 % , Vậy giá rau tháng 3 :

100 % + 100  : 100  x 10   = 110 %

Giá rau tháng 4 :

 110 %  - 100  : 100 x 10 = 99 % 

Vậy giá tiền tháng 2 đắt hơn

 câu 1 : 2^x = 128

 => x = 7

vậy x = 7

Câu 2 : 3^x + 1 = 81

 => 3^x = 81 - 1 

 => 3^x=80

Mà 3³ = 27 và 3⁴ = 81

mà 3 và 4 là 2 số tự nhiên liên tiếp nên : 3^x = 80 ( vô lý )

Vậy x không có gía trị

câu 3 

vì 10³=1000

 => x - 2 = 10

 => x = 10 +2 

 => x = 12

vậy x = 12