Cho các chất rắn: Al₂O₃, ZnO, NaOH, Al, Zn, Na₂O, K₂O, Be, Ba. Chất rắn nào có thể tan hoàn toàn trong dung dịch KOH dư?

A. Al, Zn, Be

B. ZnO, Al₂O₃, Na₂O, KOH

C. Al, Zn, Be, ZnO, Al₂O₃

D. Tất cả các chất rắn đã cho

Read the following passage and blacken the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks in the following question.

Cultural diversity can be such a cool thing. I grew up in a predominantly white private school, (62)________

teaching in a place that is extremely diverse has been a joy. I can stand in the hall and (63)________Spanish, Russian, Polish, Korean, Mandarin, Hindu, etc. the list can go on and on. What we need to be careful of is not to make (64)________a big deal out of cultural diversity. I think that when we place too much (65)________ on the diversity it can become a polarizing act. Many students are very aware (66)________their differences, and most just don’t care. I think that cultural diversity is something that needs (67)________addressed be teachers in the schools as something that is positive. Often in rural areas there is not a lot of cultural diversity. (68)________a result, when a student is from a different culture there is a question of what do I do to (69)________their learning needs. It is important before a teacher can teach diverse population they need to (70)________that they are also multicultural. In addition, how much of a role will these beliefs (71)________within the education on the child.

Question 64

A.such

B. being

C.so

D. much

Dùng bảng lượng giác hoặc máy tính bỏ túi để tìm các tỉ số lượng giác sau (làm tròn đến chữ số thập phân thứ tư):

cos52o54'

Trình tự đọc bản vẽ nhà như thế nào?

Hãy đọc bản vẽ hình chiếu của hình lăng trụ tam giác đều (h4.5), sau đó đối chiếu với hình 4.4 và trả lời các câu hỏi sau bằng cách điền vào các ô trong bảng 4.2:

- Các hình 1,2,3 là các hình chiếu gì?

- Chúng có hình dạng như thế nào?

- Chúng thể hiện các kích thước nào của hình lăng trụ tam giác đều?

Khi đốt cháy hoàn toàn m gam hỗn hợp X gồm 2 ancol (no, hai chức mạch hở) thu được V lit khí CO₂ (dktc) và a mol H₂O. Biểu thức liên hệ giữa m, a, V là

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 is the main source of order in Amish society?

A. The government

B. The economy

C. The clan structure

D. The religion

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.

The technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists enjoyed a great advantage. Especially by comparison with Britain, Americans had a wonderfully plentiful supply of wood.

The first colonists did not, as many people imagine, find an entire continent covered by a climax forest. Even along the Atlantic seaboard, the forest was broken at many points. Nevertheless, all sorts of fine trees abounded, and through the early colonial period, those who pushed westward encountered new forests. By the end of the colonial era, the price of wood had risen slightly in eastern cities, but wood was still extremely abundant.

The availability of wood brought advantages that have seldom been appreciated. Wood was a foundation of the economy. Houses and all manner of buildings were made of wood to a degree unknown in Britain. Secondly, wood was used as fuel for heating and cooking. Thirdly, it was used as the source of important industrial compounds, such as potash, an industrial alkali; charcoal, a component of gunpowder; and tannic acid, used for tanning leather.

The supply of wood conferred advantages but had some negative aspects as well. Iron at that time was produced by heating iron ore with charcoal. Because Britain was so stripped of trees, she was unable to exploit her rich iron mines. But the American colonies had both iron ore and wood; iron production was encouraged and became successful. However, when Britain developed coke smelting, the Colonies did not follow suit because they had plenty of wood and besides, charcoal iron was stronger than coke iron. Coke smelting led to technologic innovations and was linked to the emergence of the Industrial Revolution. In the early nineteenth century, the former colonies lagged behind Britain in industrial development because their supply of wood led them to cling to charcoal iron.

Question 48:What can be inferred about houses in Britain during the period written about in the passage?

A. They were more expensive than American houses.

B. They were generally built with imported materials.

C. They were typically smaller than homes in North America.

D. They were usually built from materials other than wood.