Cho hai số thực dương a, b thoả mãn  2 a + 3 b ≤ 4 . Tìm giá trị nhỏ nhất của biểu thức  Q = 2002 a + 2017 b + 2996 a − 5501 b

Mark the letter A, B, C or D to indicate the option that best completes following exchanges.

- A: "I need to stop eating such unhealthy foods."

- B: “____.

A.That sounds delicious and nutritious.

C.I know what you mean. I've started eating better myself.

C.I mainly eat baked chicken, because there's not a lot of fat.

D.Are you sure that's how you want me to make it?

Mark the letter A, B, C or D to indicate the option that best completes following exchanges.

 - "I am sorry. I've spoilt the cake.

" – “_________’

A. OK. Go ahead 

B. Yes, definitely

C. That's alright. Don't worry.   

D. I'd rather not do it

Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions.

Textbooks can't provide students with the latest information as a mobile device can.

A.Textbooks do not provide students with information later than can a mobile device.

B.The information provided by textbooks is not later than that provided by a mobile device.

C.Textbooks can't provide students with as new information as a mobile device can.

D.The information provided by textbooks is newer than that provided by a mobile device.

Quan sát trên mẫu thật ở kính hiển vi (độ phóng đại nhỏ) hoặc trên hình vẽ. Ghi lại nhận xét về hình dạng cấu tạo của mốc trắng ( để ý giữa các tế bào sợi mốc có thấy vách ngăn không)

If anyone_______, tell them I'm not at home.

A. call

B. calls

C. called

D. should call