Cho các số liệu thống kê được ghi trong bảng sau

Mức lương hàng năm của các cán bộ và nhân viên trong một công ty (đơn vị nghìn đồng)

Tìm mức lương bình quân của các cán bộ và nhân viên trong công ti, số trung vị của các số liệu thống kê đã cho.

Nêu ý nghĩa của số trung vị

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 from 43 to 52.

A rather surprising geographical feature of Antarctica is that a huge freshwater, one of the world’s largest and deepest, lies hidden there under four kilometers of ice. Now known as Lake  Vostok, this huge body of water is located under the ice block that comprises Antarctica. The lake is able to exist in its unfrozen state beneath this block of ice because its waters are warned by geothermal heat from the earth’s core. This thick glacier above Lake Vostok actually insulates it from frigid temperatures (the lowest ever recorded on Earth) on the surface.

The lake was first discovered in the 1970s while a research team was conducting an aerial survey of the area. Radio waves from the survey equipment penetrated the ice and revealed a body of water of indeterminate size. It was not until much more recently that data collected by satellite made scientists aware of the tremendous size of the lake; satellite-borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake.

The discovery of such a huge fresh water lake trapped under Antarctica is of interest to the scientific community because of the potential that the lake contains ancient microbes that have survived for thousands upon thousands of years, unaffected by factors such as nuclear fallout and elevated ultraviolet light that have conducting research on the lake in such a harsh climate and in the problems associated with obtaining uncontaminated sampled from the lake without actually exposing the lake to contamination. Scientists are looking for possible ways to accomplish this

The purpose of the passage is to __________.

A. explain how Lake Vostok was discovered

B. provide satellite data concerning Antarctica

C. discuss future plans for Lake Vostok

D. present an unexpected aspect of Antarctica’s geography

Cho phản ứng:

X → trung   hop  1,3,5-trimetylbenzen.

Chất X là:

A. axetilen

B. metylaxetilen 

C. etylaxetilen

D. đimetylaxetilen

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 6 to 15

Music is universal - it is produced by all cultures. Some scientists believe that music came before speech and (6) ______ as a development of mating calls. In fact, there is one theory that the (7) ______ languages were chanted or sung, rather than spoken. Indeed, in some cultures, music is a form of (8) ______ history. The Aboriginal Australians, for example, use music as a means to (9) ______ on stories of the land and spirits to the next (10)________.

New evidence suggests that music does not just (11) ______ the feel - good factor but it is also good for the brain. A study of intellectually (12) ______ children showed that they could recall more (13)_________ after it was given to them in a song than after it was read to them as a story. Researchers also report that people score better on a standard intelligence test after listening to Mozart. The so-called “Mozart effect” has also been (14) ______ by findings that rats (15)________ up on Mozart run faster through a complex network of paths or passages, known as a maze. Overall, it seems that in most instances people who suffer from any form of mental illness benefit from listening to music.

Điền vào ô 14

A. supported

B. given

C. Marked

D. remembered

​Hơi bé , bạn có thể bấm ctrl rồi lăn chuột sao cho vừa tầm nhìn nha !!!