Cho cấp số cộng u n  biết u 2 = 3  và u 4 = 7.  Gía trị của u 15  bằng

A. 27

B. 31 

C. 35 

D. 29

Trong không gian Oxyz, cho hai điểm A(1;-1;2), B(2;1;1). Độ dài đoạn AB bằng

A. 2

B.  6

C.  2

D. 6

Read the following passage and then choose the best answer for each question by circling the corresponding letter A, B, C or D from 36 to 40.

The modern comic strip started out as ammunition in a newspaper war between giants of the American press in the late nineteenth century. The first full-color comic strip appeared in January 1894 in the New York World, owned by Joseph Pulitzer. The first regular weekly full-color comic supplement, similar to today’s Sunday funnies, appeared two years later, in William Randolph Hearst’s rival New York paper, the Morning Journal.

Both were immensely popular and publishers realized that supplementing the news with comic relief boosted the sale of papers. The Morning Journal started another feature in 1896, the “Yellow Kid”, the first continuous comic character in the United States, whose creator, Richard Outcault, had been lured away from the World by the ambitious Hearst. The “Yellow Kid” was in many ways a pioneer. Its comic dialogue was the strictly urban farce that came to characterize later strips, and it introduced the speech balloon inside the strip, usually placed above the characters’ heads.

The first strip to incorporate all the elements of later comics was Rudolph Dirks’s “Katzenjammer Kids”, based on Wilhelm Busch’s Max and Moritz, a European satire of the nineteenth century. The “Kids” strip, first published in 1897, served as the prototype for future American strips. It contained not only speech balloons, but a continuous cast of characters, and was divided into small regular panels that did away with the larger panoramic scenes of earlier comics.

Newspaper syndication played a major role in spreading the popularity of comic strips throughout the country. Though weekly colored comics came first, daily black-and-white strips were not far behind. The first appeared in the Chicago American in 1904. It was followed by many imitators, and by 1915 blackand-white comic strips had become a staple of daily newspapers around the country. 

The word “incorporate” is closest in meaning to 

A. combine 

B. create 

C. affect 

D. mention 

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines a pair of sentences in the following question.

I lent him some money. I wanted him to continue his study at college.

A. I lent him some money so that to continue his study at college

B. I lent him some money for him continue his study at college

C. I lent him some money so as he will continue his study at college

D. I lent him some money in order that he could continue his study at college