Tìm lỗi sai: They are getting used to walking to school in two months.

Read the passage carefully, then choose the correct option (marked A, B, C or D) to answer the questions.

In the 1960s, it took pop and rock groups one or two days to record their songs. Nowadays, it can take months and months. Many rock groups begin by recording only one instrument, for example, the voice. Then they record other instruments- electric piano, synthesizer, guitars, drums and so on.

Next, they might use a computer to add special effects. Finally, they “mix” all the instruments until they get the sound that they want. This means that a CD or cassette will always sound very different from a live concert.

Music engineers have developed a new computer programme that will change the future of music. A computer can analyse a singer’s voice. Then if you give the computer the lyrics and music of a song, the computer can “sing” it in that voice. This means that a singer only needs to record one song and the computer can then sing other songs in the singer’s own voice. Singers can sing new songs many years after they have died.

Most of us listen to music for pleasure, but for the record companies, music is a product, the same as soap powder. When a record company finds a new group (or “band”), they first try to develop the band’s “profile”. They will try to create an “image” for the band that they think will attract young people. Instead of allowing the band’s full artistic freedom, they will often tell the band what they should wear, what they should say and how they should sing and play.

In recent year, many rock groups have started their own record companies because they say that the big companies are too commercial.

Today’s record procedure results in ________.

Which of the following is NOT true about the new computer programme?

Record companies don’t always ________.

Read the passage carefully and choose the correct answer.

SON DOONG CAVE

Located in the limestone mountains of Phong Nha - Ke Bang National Park, Son Doong Caves was first found in 1991 by Ho Khanh, a local man. In 2009, the cave was explored and published by a group of scientists from British Cave Research Association. Son Doong Cave was formed from 2 to 5 million years ago, when the river flowed through the limestone mountain area and was buried. The water eroded limestone and created an underground tunnel. In soft limestone areas, the collapse of tunnel ceiling formed large holes which became giant domes afterward. The cave is about 200m high, 200m wide and at least 8.5 km long. Especially, Son Doong consists of two entrances, which is unique among explored caves in Phong Nha ~ Ke Bang National Park. Exploring the cave,  visitors were surprised with spectacular scenery of numerous stalactites of which some giant stalagmites are more than 70 metres high. Deep inside the cave exists a grandiose tropical jungle called “Garden of Eden” by the explorers. The jungle is home to diversified system of fauna and flora. Besides, the cave possesses a 2.5-kilometre underground river. Not far from the “Garden of Eden” lies an enormous “pearl collection” consisting of tens of thousands of small stone pieces in dry ponds, contributing to magnificent beauty of the cave.

The most important feature of “Garden of Eden” is ____________. 

We can infer from the passage that ________.