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

Women still cover their heads in some countries. They did so in the past.

A. Women still cover their heads in some countries as they did in the past.

B. Women still cover their heads in some countries as they did so in the past.

C. Women cover their heads in some countries similar to what they did so in the past.

D. In the past, women covered their heads but they do so today in some countries.

Đốt cháy hoàn toàn 4,8 gam lưu huỳnh thành lưu huỳnh đioxit thì cần vừa đủ V lít không khí (đktc), biết trong không khí thì oxi chiếm 20% thể tích. Giá trị của V là

A. 17,8

B. 18,8

C. 15,8

D. 16,8

As William Chopik, associate professor of psychology and author of the study says: “Friends are a conscious choice. Family relationships can be serious, negative and monotonous." The research included two studies - one a broad survey of nearly 300,000 people, aged between 15 and 99, from more than 90 countries. This study found that those (25) ______valued friendships highly were healthier and happier (according to their own reports), especially as they got older. The second study used data from a US survey of 7,481 people over 50. Subjects were questioned about the quality of their friendships - how much friends understood them and how much they let them down.

        When friendships were reported as being stressful, people reported (26) ______        rates of disease. When friends were supportive, people were healthier. Most of the friendships were reported as being supportive. Family, (27) ______, were found to have little influence on an individual's health and wellbeing. Spouses and children had some effect, but not as much as friends.

Chopik says he isn't suggesting we ignore our families, but that friends make us feel better. With friends you are more likely (28) ______do activities - they provide an outlet. You can say things to friends and they are less judgmental. There is a distance there that provides a level of honesty." He says that cultivating good-quality friendships across our lives is beneficial - raising self-esteem and (29) ______against stress.

Điền vào số (27)

A. however

B. moreover          

C. in addition       

D. otherwise

Cho các phát biểu sau:

 (1) Than cốc được dùng để chế tạo thuốc nổ đen, thuốc pháo

 (2) Than gỗ được dùng làm chất khử trong luyện kim

 (3) Thủy tinh lỏng là dung dịch đậm đặc của Na₂SiO₃ và K₂SiO₃

 (4) Trong tự nhiên,Silic có tồn tại ở dạng đơn chất.

 (5) Silic được dùng để chế tạo tế bào quang điện

 (6) Silic có trong các khoáng vật như thạch anh,cát....

Số phát biểu đúng là

A. 2.                     

B. 4.                     

C. 5.                    

D. 3

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.

No educational medium better serves as a means of spatial communication than the atlas. Atlases deal with such invaluable information as population distribution and density. One of the best, Pennycooke’s World Atlas, has been widely accepted as a standard owing to the quality of its maps and photographs, which not only show various settlements but also portray them in a variety of scales. In fact, the very first map in the atlas is a cleverly designed population cartogram that projects the size of each country if geographical size were proportional to population. Following the proportional layout, a sequence of smaller maps shows the world’s population density, each country’s birth and death rates, population increase and decrease, industrialization, urbanization, gross national product in terms of per capita income, the quality of medical care, literacy, and language. To give readers a perspective on how their own country fits in with the global view, additional projections despite the world’s patterns in nutrition, calorie and protein consumption, health care, number of physicians per unit of population, and life expectancy by region. Population density maps on a subcontinental scale, as well as political maps, convey the diverse demographic phenomena of the world in a broad array of scales.

The author of the passage implies that ______.

A. atlases provide a bird’s eye view of country. 

B. atlases can be versatile instruments. 

C. maps use a variety of scales in each projection. 

D. maps of countries differ in size.

Cho các phản ứng hoá học sau

(1) Al₂O₃ + dung dịch NaOH →                           (2) Al₄C₃ + H₂O →

(3) dung dịch NaAlO₂ + CO₂→                            (4) dung dịch AlCl₃ + dung dịch Na₂CO₃→

(5) dung dịch AlCl₃ + dung dịch NH₃→               (6) Al + dung dịch NaOH →

Số phản ứng có sự tạo thành Al(OH)₃ là

A.5                       

B.3                       

C.2                        

D. 4.