Bài 1: Một công nhân được giao khoán 120 sản phẩm trong một thời gian nhất định. Sau khi làm được một nửa số lượng được giao, nhờ hợp lí hóa một số thao tác nên mỗi giờ người đó làm thêm được 3 sản phẩm nữa. Nhờ đó, mức khoán được giao đã được người công nhân hoàn thành sớm hơn 1 giờ. Tính năng suất và thời gian dự định của người công nhân đó

6. Mr. Smith was too busy to speak to me. I came to see him. (whom) 

__________________________________________________________ 

7. I saw several houses. I thought most of them were quite unsuitable. (after) 

______________________________________________________ 

8. They couldn’t speak French. They could not find a job. (because) 

__________________________________________________________ 

9. Mr. Jones was very generous about overtime payments. I loved this most about him. (what) __________________________________________________________ 

10. Professor Johnson is visiting us next week. I have long looked up to him. (whom) __________________________________________________________ 

11. I did not know what would happen. I did not care what would happen. (and) __________________________________________________________ 

12. I don’t like keeping fish. My sister doesn’t like keeping fish either. (neither) __________________________________________________________ 

13. A friend of mine helped me to get a job. His father is the manager of a company. (whose) __________________________________________________________ 

14. Mike gave all of it to his parents. He won £50,000. (although) 

__________________________________________________________ 

15. London was once the largest city in the world. Its population is now falling. (but)

VI.  Write the correct form of the words in brackets.

1.    The first _______ to study the surface of Mars was Galileo Galilei. (astronomy)

2.    A Mars _______ is a place that humans can live in on Mars. (habitable)

3.    The space tourists will spend two days traveling to and from the _______ space station. (orbit)

4.    The sensation of _______ , or zero gravity, happens when the effects of gravity are not felt. (weigh)

5.    The astronauts are performing NASA’s first routine _______ outside the International Space Station. (maintain)

6.    On 5 October 1957 the Soviet Union _______ in putting the first man made satellite into orbit around the Earth. (success)

7.    The astronauts from many nations worked _______ together to accomplish their work. (harmony)

8.    One of the basic _______ to join NASA is American citizenship. (require)

9.    John Young was one of NASA’s most _______ astronauts and the first astronaut to fly into space six times. (experience)

10.  The Apollo 11 moon landing was a _______ achievement. (history)

100%+18%=?

cho hpt x + y = 4 và 2x-my =1

a) Tìm m để hpt vô nghiệm? b) Tìm m để hpt có nghiệm, tìm nghiệm đó?

cho hệ pt :x+y=3 và 2x - my=1 

tìm m để htp vô nghiệm

19. Jane walked past me without speaking. She ______ me.

            A. must have seen                                                       B. mustn’t have seen  

C. can’t have seen                                                       D. couldn’t see

Bài 9. Cho hàm số y = (2m- 3) x -1 (1). Tìm m để: a)Hàm số (1) là hàm số bậc nhất b)Hàm số (1) là hàm số bậc nhất đồng biến, nghịch biến c)Hàm số (1) đi qua điểm (-2; -3) d)Đồ thị của (1) là 1 đường thẳng // với đt y = (-m+ 2) x + 2m e)Đồ thị của (1) đồng quy với 2 đt y = 2x - 4 và y = x +1 f)Khoảng cách từ gốc tọa độ đến đường thẳng (1) bằng 1 5