Chọn từ đối nghĩa:

1. He tries to (bring home to her) how much he loves her

A. make her sad                            B. make her blurred

C. make her disappointed             D. make her happy

2. The man (kept his head) when another man crashed him. He was silent while that man kept talking

A. went mad      B. kept calm      C. lost him temper     D. went wrong

3. The police have instructed everyone how (to keep an eye out for) pickpockets on the bus. Bags and jewelries should be held in hands

A. not to buy a lot                  B. not to pay attenion to

C. not to look through            D. not to look for

Sửa lỗi sai:

1. Every (employee) is (expected) to be (competent) and  (industrial) because wage rates depend on levels of productivity

2. The (course) has four main (ingredients): business law, (finance), computing and (management) skills

3. The (plans) for the new (development) have (risen) angry (protests) from local residents

Chọn trọng âm khác:

1. A. cretificate         B. compulsory       C. intelligent        D. information

2 . A. system            B. require               C. achieve           D. consist

Cho hàm số \(y=\dfrac{-1}{3x^2+x+2}\) có đồ thị (C). Viết phương trình tiếp tuyến biết:

a) Có hệ số góc bằng 1

b) Tiếp tuyến song song với Δ có phương trình \(y=-3x+2\)

c) Tiếp tuyến vuông góc với phương trình x+8y+1=0

Tính đạo hàm:

a) y= \(\left(x^5+2x\right).\left(x^6-3\right).\left(3x^7+6x^2-2\right)\)

b) y= \(\left(x^4-\dfrac{2}{3x}\right)^5\)tại x=10

c) y= \(\dfrac{5x-2}{x+1}\) tại x=4

Chọn đáp án đúng:

1....,the audience will stand up

A. Until the Queen will arrive              B. When the Queen arrives

C. As soon as the Queen arrive          D. While the Queen was arriving

2.....,I'll travel around the world

A. as soon as I was old enough          B. when Iam old enough

C. while I was old enough                   D. until I will be old enough

3. One of the good thing about teaching young children is their....

A. apathy      B. enthusiam        C. laziness         D. lethargy

4. I don't think we should...this matter any further

A. abandon        B. unlearn         C. cancel         D. pursue

5. Her behavior was very.....

A. suspicious        B. suspicion         C. suspiciously        D. suspiciousness

6. He went...to the police to explain what he had done

A. voluntary      B. volunteer        C. volunteering       D. voluntarily

7. There's a lot of...between computer companies

A. competitive     B. competitors      C. competitions     D. competitively

8. The boy...by a dog was taken to hospital

A. attacked       B. attacks       C. was attacked       D. attacking

9. Tom is the most handsome boy...to this school

A. to have come      B. came       C. coming       D. to come

10. Stop...about the bush, John! Just tell me exactly what the problem is

A. rushing         B. hiding       C. beating        D. moving

Tính đạo hàm:

a) y= \(\dfrac{x^3+2\sqrt{x-1}}{x-1}\)

b) y= \(\dfrac{4x^3+2x-3}{\sqrt{x^2+2}}\)

c) y= \(|x^3+x+1|\)

d) y= \(\sqrt{7-6x^4+x^3}\)

e) y= \(\dfrac{x^5+1}{2-\sqrt{x^2+3}}\)

Chọn đáp án đúng

Tính đạo hàm của hàm hợp:

a) y= \(\sqrt{\left(x^3-3x\right)^3}\)

b) y=\(\left(\sqrt{x^3+1}-x^2+2\right)^5\)

c) y= \(2.\left(x^6+2x-3\right)^7\)

d) y= \(\dfrac{1}{\sqrt{\left(x^3-1\right)^5}}\)