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

In the 1960s, The Beatles were probably the most famous pop group in the whole world. Since then, there have been a great many groups that have achieved enormous fame, so it is perhaps difficult now to imagine how sensational The Beatles were at that time. They were four boys from the north of England and none of them had any training in music. They started by performing and recording songs by black Americans and they had some success with these songs. Then they started writing their own songs and that was when they became really popular. The Beatles changed pop music. They were the first pop group to achieve great success from songs they had written themselves. After that it became common for groups and singers to write their own songs. The Beatles did not have a long career. Their first hit record was in 1963 and they split up in 1970. They stopped doing live performances in 1966 because it had become too dangerous for them – their fans were so excited that they surrounded them and tried to take their clothes as souvenirs! However, today some of their songs remain as famous as they were when they first came out. Throughout the world many people can sing part of a Beatles song if you ask them.

The Beatles stopped their live performances because

A. They spent more time writing their own songs

B. They did not want to work with each other

C. They had earned enough money

D. They were afraid of being hurt by fans

Trong phòng thí nghiệm, để điều chế một lượng nhỏ khí X tinh khiết, người ta đun nóng dung dịch amoni nitrit bão hòa. Khí X là:

A. NO.

B. NO₂.

C. N₂O

D. N₂.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.

            In the past, the process of choosing a career was a much simpler matter than it is today. Aboy often followed in his father’s footsteps. His sister learned the household skills that (23) _________ her to become a wife and mother. Nowadays young people grow up in a much freer society (24) _________they enjoy almost unlimited career opportunities. In recent years, there (25) _________ an enormous increase in the kinds of vocations from which it is possible to choose. In addition, many of the barriers to career opportunity that existed only a few decades ago, such as (26) _________ based on sex or religion or ethnic origins, are (27) _________ disappearing.

Điền vào số (24)

A. where    

B. when      

C. why        

D. whom