Attention, please. Here is a special announcement. A little girl is reported missing. She was last seen 20 minutes ago near the main entrance to the Car Fair. Her name's Mary and she is 3 years old. She has dark, short hair. She is wearing shorts, the blue shorts and a long-sleeved blouse. She is wearing a pair of shoes, th brown shoes. She may be carruing a large doll.

If you see Mary, please bring her to the the Information Desk. Her father is waiting for her there. Thanks.

*Questions:

1. How old is Mary?

=>........................................................

2. Where does she lose her way?

=> ........................................................

3. What is she wearing?

=>........................................................

4. Where is Mary's father waiting for her?

=>........................................................

Giá trị của biểu thức ( x – 2 ) x 2 + 2 x + 4  tại x = - 2 là:

A. -16

B. 0

C. -14

D. 2

1. Mai wishes she .......................................

a. is spending her summer holiday in Singapore

b. spent her summer holiday in Singapore

c. spends her summer holiday in Singapore

d.spent his summer holiday in Singapore

2. It seem very diffcult...................................

a. for her having a trip abroad

b. for her have a trip abroad

c. for her to have a trip abroad

d.to her to have a trip abroad

1. Kuala Lumpur is the largest city in Malaysia

a. No other city in Malaysia is as large than Kuala Lumpur

b. No other city in Malaysia is as large as Kuala Lumpur

c. Any other city in Malaysia is large than Kuala Lumpur

d. All are correct

2. He doesn't live on a farm

a. He uses to live on a farm

b. He used to live on a farm

c. He is used to living on a farm

d. He likes to live on a farm

3. I spent half an hour writing the letter

a. I wrote the letter half an hour ago

b. half an houe ago was a short time for me to write the letter

c. It took me half an hour to write the letter

d.I should write the letter in half an hour

715 638 có mấy lớp?

A. 1 lớp

B. 2 lớp

C. 3 lớp

D. 4 lớp

Làm tính nhân:

a) x 2 − 49 2 x + 1 . 3 7 − x  với x ≠ − 1 2  và x ≠ 7  

b) 3 y 2 − 2 y y 2 − 1 . 1 − y 4 ( 2 − 3 y ) 3  với y ≠ ± 1  và  y ≠ 2 3

Cho hình thang ABCD có hai đáy AB = 5cm, CD = 15 cm và hai đường chéo là AC = 16 cm, BD = 12 cm. Tính diện tích hình thang ABCD

Ba người cùng làm một công việc. Nếu làm riêng, người thứ nhất phải mất 5 giờ, người thứ hai mất 4 giờ và người thứ ba mất 6 giờ. Nếu làm chung thì mỗi giờ cả ba người làm được mấy phần công việc?