Gọi z1 và z2 là nghiệm của phương trình z+1/z=-1. Gía trị của P=z²⁰¹⁶+(1/z²⁰¹⁶)+\(\frac{ }{ }\)

34 tuổi nhầm

Một hình vuông cạnh 5 cm, đặt trong từ trường đều có cảm ứng từ B = 4 . 10 - 4   T . Từ thông qua hình vuông đó bằng 10 - 6   W b . Góc hợp bởi vectơ cảm ứng từ và vectơ pháp tuyến với hình vuông đó là

A.  α = 0 °

B.  α = 30 °

C.  α = 60 °

D. α = 90 °

Rewrite the sentences, using words in brackets

The boy is standing near the tree. He is my brother. (who)

He (learn) ____________ English since 1992. He is doing his homework in the living room.

Rearrange the sentences to make meaningful sentences

adolescent/ UNICEF/ girls’ health/ helps/ and/ adolescent/ wellbeing/ countries/ advance.

A. UNICEF helps advance countries adolescent girls’ health and wellbeing.

B. UNICEF helps countries advance girls’ health and adolescent wellbeing.

C. UNICEF helps advance countries and adolescent girls’ health wellbeing.

D. UNICEF helps countries advance adolescent girls’ health and wellbeing.

Read the passage below and decide whether the statements are TRUE or FALSE?

Inventions That Changes Our World

People have been inventing things for years. Paper was invented about 2,000 years ago. The wheel was invented more than 5,000 years ago. What would life be like without paper to write on or bikes to ride? Those inventions have made life easier.

Airplane

The Wright Brothers invented the first airplane in December 1903. That makes 2003 the 100th anniversary! Before the airplane was invented, most people traveled by cars, boats, and trains. Today, airplanes help people travel faster. How do airplanes help you?

Telephone

Alexander Graham Bell invented the telephone in 1876. Before the telephone was invented, people kept in touch by writing letters or talking in person. Today the telephone makes it easier for people to talk to one another. How do telephones help you?

Automobile

The first four-wheeled gas-powered car was invented by Karl Benz in 1891. Before people had cars, they couldn’t travel easily. They walked or rode horses for short trips. They took trains or boats for long trips. Today cars are one of the main ways people travel. How do cars help you?

Computer

People worked for years to make the first computer. It was built in 1946. The first computer was called ENIAC. Today computers are an important part of many people’s lives. People use computers as tools to write, get information, and much more. How do computers help you?

Question: Alexander Graham Bell invented the telephone in 1876.

A. True

B. False

Choose the letter A, B, C or D to complete the sentences

................... in Shanghai than in any other city in China.

A. More people live

B. More people living

C. It has more people

D. More living people