tìm m để mx-m-x-1 = 0 có nghiệm là số dương và nhỏ hơn 1

Khi giặc đến, người nông dân đã có hành động như thế nào?

A. Đợi sự chống trả của quân triều đình 

B. Dời bỏ quê hương đi lánh nạn 

C. tự nguyện bổ sung vào đội quân chiến đấu với quyết tâm sắt đá.

Tập hợp tất cả các điểm biểu diễn số phức z thỏa mãn 2 z − i = 6 là một đường tròn có bán kính bằng:

A. 3

B.  6 2

C. 6

D.  3 2

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the numbered blanks.

THE LIFE OF COUNTRY VET

Don Strange, who works as a vet in northern England, leads a busy life. As well as having to treat pets which are unwell, he often visits farms where problems of (33) _______ kinds await him. He has lost (34) _______ of the number of times he has been called out at midnight to give advice to a farmer with sick sheep or cows.

Recently, a television company chose Don as the subject of a documentary program it was making about the life of a country vet. The program showed the difficult situations Don faces every day such as helping a cow to give birth or winning the trust of an aggressive dog (35) _______ needs an injection. Not all of Don’s patients are domestic animals, (36) _______, and in the program people saw him helping an owl which had a damaged wing. It also showed Don holding a meeting with villagers concerned about the damage a new road might do to their (37) _______ environment. 

Điền ô số 33

A. various 

B. variety 

C. variation 

D. varied