Hình thức sinh sản vô tính nào có cả ở động vật đơn bào và đa bào?

A. Phân đôi.

B. Nảy chồi.

C. Phân mảnh.

D. Trinh sinh.

Cho thí nghiệm như hình vẽ:

Thí nghiệm trên dùng để định tính nguyên tố nào có trong glucozơ

A. hiđro và oxi

B. cacbon và hiđro

C. cacbon và oxi

D. cacbon

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.

The modern comic strip started out as ammunition in a newspapaer 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’ 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 baloon 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 baloons, 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 black-and-white comic strips had become a staple of daily newspapers around the country.

In what order does the author discuss various comic strips in the passage?

A. In the order in which they were created

B. From most popular to least popular

C. According to the newspaper in which they appeared

D. In alphabetical order by title

Nung nóng 19,52 gam hỗn hợp gồm Al và Cr_­2O₃ trong điều kiện không có không khí, sau một thời gian, thu được hỗn hợp rắn X. Hòa tan hết X cần dùng 600 ml dung dịch HCl 1,6M, thu được 0,18 mol khí H₂ và dung dịch Y. Cho dung dịch NaOH dư vào Y, thu được x gam kết tủa. Giá trị của x là

A. 8,60.

B. 10,32.

C. 6,88.

D. 12,00.

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 35 to 42.

  A folk culture is small, isolated, cohesive, conservative, nearly self-sufficient group that is homogeneous in custom and race, with a strong family or clan structure and highly developed rituals.

  Order is maintained through sanctions based in the religion or family, and interpersonal relationships are strong. Tradition is paramount, and change comes infrequently and slowly. There is relatively little division of labor into specialized duties. Rather, each person is expected to perform a great variety of tasks, though duties may differ between the sexes. Most goods are handmade, and a subsistence economy prevails. Individualism is weakly developed in folk cultures, as are social classes. Unaltered folk cultures no longer exist in industrialized countries such as the United States and Canada. Perhaps the nearest modem equivalent in Anglo-America is the Amish, a German American farming sect that largely renounces the products and labor saving devices of the industrial age. In Amish areas, horse-drawn buggies till serve as a local transportation device, and the faithful are not permitted to own automobiles.

  The Amish’s central religious concept of Demut, “humility”, clearly reflects the weakness of individualism and social class so typical of folk cultures, and there is a corresponding strength of Amish group identity. Rarely do the Amish marry outside their sect. The religion, a variety of the Mennonite faith, provides the principal mechanism for maintaining order.

  By contrast, a popular culture is a large heterogeneous group, often highly individualistic and constantly changing. Relationships tend to be impersonal, and a pronounced division of labor exists, leading to the establishment of many specialized professions. Secular institutions, of control such as the police and army take the place of religion and family in maintaining order, and a money-based economy prevails. Because of these contrasts, “popular” may be viewed as clearly different from “folk”.

  The popular is replacing the folk in industrialized countries and in many developing nations, Folk-made objects give way to their popular equivalent, usually because the popular item is more quickly or cheaply produced, is easier or time saving to use, or lends more prestige to the owner.

What does the passage mainly discuss?

A. Two decades in modem society 

B. The influence of industrial technology 

C. The characteristics of “folk” and “popular” societies 

D. The specialization of labor in Canada and the United States