Read the following passage carefully, and then select the best option A, B, C or D to complete it

Music, artful arrangement of sounds (1) _______ time. This definition is obviously very broad, but a narrower one would exclude (2) _______ much. Music is part of virtually every culture on (3) _______, but it varies widely among cultures in style and structure. Definitions of music can (4) _______ dramatically over a short time, as they have across the world during the 20th (5) _________.

Can music exist without (6) _______? Some philosophers argue that music should be defined as a kind of “mental (7) _______” and that the physical aspects of sound are simply by-products of this image. If you (8) _______ you can have a musical experience by imagining the sound of a piece of music, then you think (9) _______ can exist without sound. But most musical experiences involve producing or (10) _______ to physical characteristics of sound such as pitch and timbre (quality comparable to texture or color in sight).

Is the tape-recorded sound of a large metal-stamping machine music? Are 4 minutes (11) _______ 33 seconds of silence music? Is the activity of reading a (12) _______ of hundreds of seemingly unrelated objects, activities, and states of mind music? Each of these “(13) _______”, as well as many other sounds (or nonsounds), has been copyrighted (14) _______ a musical composition, performed, and recorded in the 20th century. One of the legacies of 20th-century music is to have blurred the definition of music as (15) _______ before.

Question 34:

A. like

B. as

C. such as

D. for example

Cho hình chóp tứ giác đều S.ABCD với O là tâm đa giác đáy ABCD. Khẳng định nào sau đây là sai?

A.  B D ⊥ S A C             

B.  B C ⊥ S A B         

C.  A C ⊥ S B D         

D.  O   S ⊥ A B C D

Tìm họ nguyên hàm của hàm số  f x = 2 x 2 + x − 1 x 2

A.  ∫ 2 x 2 + x − 1 x 2 d x = 2 + 1 x − 1 x 2 + C

B.  ∫ 2 x 2 + x − 1 x 2 d x = 2 x + 1 x + ln x + C

C.  ∫ 2 x 2 + x − 1 x 2 d x = x 2 + 1 x + ln x + C

D.  ∫ 2 x 2 + x − 1 x 2 d x = x 2 − 1 x + ln x + C

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

John: “What time did the meeting end?'' - Laura: “_______."

A. As soon as possible.

B. For half an hour.

C. In a minute.

D. Just before lunch