Tráng bạc hoàn toàn m gam glucozơ thu được 43,2 gam  A g . Nếu lên men rượu hoàn toàn m gam glucozơ rồi cho toàn bộ khí C O 2 tạo thành vào nước vôi trong dư thì lượng kết tủa thu được là

A. 20 gam

B. 40 gam

C. 80 gam

D. 60 gam

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 question below.

We find that bright children are rarely held back by mixed-ability teaching. On the contrary, both their knowledge and experience are enriched. We feel that there are many disadvantages in streaming pupils. It does not take into account the fact that children develop at different rates. It can have a bad effect on both the bright and the not-so-bright child. After all, it can be quite discouraging to be at the bottom of the top grade!

Besides, it is rather unreal to grade people just according to their intellectual ability. This is only one aspect of their total personality. We are concerned to develop the abilities of all our pupils to the full, not just their academic ability. We also value personal qualities and social skills, and we find that mixed-ability teaching contributes to all these aspects of learning.

In our classroom, we work in various ways. The pupils often work in groups; this gives them the opportunity to learn to co-operate, to share, and to develop leadership skills. They also learn how to cope with the personal problems as well as learning how to think, to make decisions, to analyze and evaluate, to communicate effectively. The pupils learn from each other as well as from the teachers.

Sometimes the pupils work in pairs; sometimes the work on individual tasks and assignments, they can do this at their own speed. They also have some formal class teaching when this is appropriate. We encourage our pupils to use the library, and we teach them the skills they need in order to do this effectively. An advanced pupil can do advanced works; it does not matter what age the child is. We expect our pupils to do their best, not their least, and we give them every encouragement to attain this goal

Which of the following statements can best summarize the main idea of the passage?

A. The aim of education is to find out how to teach the bright and not-so-bright pupils

B. Various ways of teaching should be encouraged in class

C. Children, in general, develop at different rates

D. Bright children do benefit from mixed-ability teaching

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 question below.

We find that bright children are rarely held back by mixed-ability teaching. On the contrary, both their knowledge and experience are enriched. We feel that there are many disadvantages in streaming pupils. It does not take into account the fact that children develop at different rates. It can have a bad effect on both the bright and the not-so-bright child. After all, it can be quite discouraging to be at the bottom of the top grade!

Besides, it is rather unreal to grade people just according to their intellectual ability. This is only one aspect of their total personality. We are concerned to develop the abilities of all our pupils to the full, not just their academic ability. We also value personal qualities and social skills, and we find that mixed-ability teaching contributes to all these aspects of learning.

In our classroom, we work in various ways. The pupils often work in groups; this gives them the opportunity to learn to co-operate, to share, and to develop leadership skills. They also learn how to cope with the personal problems as well as learning how to think, to make decisions, to analyze and evaluate, to communicate effectively. The pupils learn from each other as well as from the teachers.

Sometimes the pupils work in pairs; sometimes the work on individual tasks and assignments, they can do this at their own speed. They also have some formal class teaching when this is appropriate. We encourage our pupils to use the library, and we teach them the skills they need in order to do this effectively. An advanced pupil can do advanced works; it does not matter what age the child is. We expect our pupils to do their best, not their least, and we give them every encouragement to attain this goal

According to the passage, which of the following is an advantage of mixed-ability teaching?

A. Formal class teaching is the important way to give pupils essential skills such as those to be used in the library

B. Pupils as individuals always have the opportunities to work on their own

C. A pupil can be at the bottom of a class

D. Pupils can be hindered from an all-round development

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

          Who talk more - men or women? Most people believe that women talk more. However, linguist Deborah Tannen, who has studied the communication style of men and women , says that this is a stereotype . According to Tannen, women are more verbal - talk more - in private situations , where they use conversation as the "glue" to hold relationships together. But, she says, men talk more in public situations, where they use conversation to exchange information and gain status. Tannen points out that we can see these differences even in children. Little girls often play with one "best friend", their play includes a lot of conversation. Little boys often play games in groups; their play usually involves more doing than talking. In school, girls are often better at verbal skills, boys are often better at mathematics.

          A recent study at Emory University helps to shed light on the roots of this difference. Researchers studied conversation between children age 3-6 and their parents. They found evidence that parents talk very differently to their son than they do to their daughters. The startling conclusion was that parents use more language with their girls . Specifically, when parents talk with their daughters , they use more descriptive language and more details. There is also far more talk about emotions, especially sadness, with daughters than with sons. 

Which of the following statements is TRUE about the passage?

A. Parents use more language to talk with their daughters. 

B. Boys don't like showing their emotions.

C. Parents give more love to their daughters  than  their sons. 

D. Both boys and girls are talkative at school.

Những người đau dày thường có pH trong dạ dày nhỏ hơn 2 (mức hình thường là nằm trong khoảng từ 2 đến 3). Để chữa bệnh, người bệnh thường uống chất nào dưới đây trước bữa ăn ?

A. Nước đường

B. Dung dịch NaOH loãng

C. Nước muối

D. Dung dịch NaHCO₃