Trong không gian với hệ tọa độ , cho hai mặt phẳng  và . Khi đó, giao tuyến của  và  có một vectơ chỉ phương là:             

Trong không gian Oxyz, điểm nào dưới đây thuộc đường thẳng ?         

Trong không gian với hệ tọa độ Oxyz, cho hình lập phương ABCD.A’B’C’D’ có tọa độ các đỉnh . Đường thẳng d song song với A’C, cắt cả hai đường thẳng AC’ và B’D’ có phương trình là:

Trong không gian với hệ tọa độ cho hai đường thẳng  và . Phương trình nào dưới đây là phương trình đường thẳng thuộc mặt phẳng chứa và đồng thời cách đều hai đường thẳng đó.         

Trong không gian với hệ tọa độ , cho đường thẳng  có phương trình . Điểm nào sau đây không thuộc đường thẳng ?  

Trong không gian với hệ tọa độ , tìm tất cả các giá trị của tham số  để đường thẳng : song song với mặt phẳng : .         

Trong không gian , đường thẳng  có một vectơ chỉ phương là

        Trong không gian với hệ tọa độ Oxyz cho hai mặt phẳng và. Phương trình chính tắc đường giao tuyển của hai mặt phẳng (P) và (Q) là :         

Trong không gian Oxyz đường thẳng d đi qua gốc tọa độ O và có vectơ chỉ phương có phương trình :           

Trong không gian với hệ toạ độ , cho điểm và hai mặt phẳng , . Phương trình nào dưới đây là phương trình đường thẳng đi qua , song song với và ?         

Trong không gian tọa độ Oxyz, cho đường thẳng . Véctơ nào sau đây là một vectơ chỉ phương của đường thẳng (d) ?           

Trong không gian cho hai mặt phẳng Viết phương trình của đường thẳng đi qua nằm trong mặt phẳng và tạo với mặt phẳng một góc bằng  

Trong không gian với hệ tọa độ Oxyz, cho đường thẳng (d) có phương trình . Vecto nào dưới đây là vecto chỉ phương của đường thẳng (d).            

Trong không gian tọa độ  phương trình nào dưới đây là phương trình chính tắc của đường thẳng  

Trong không gian , cho điểm , mặt phẳng và mặt cầu . Gọi là đường thẳng đi qua , nằm trong và cắt tại hai điểm có khoảng cách nhỏ nhất. Phương trình của là

Trong không gian Oxyz, cho mặt phẳng  và đường thẳng . Hình chiếu vuông góc của  trên  có phương trình là  

Trong không gian Oxyz, cho các điểm và đường thẳng . Viết phương trình chính tắc của đường thẳng nằm trong mặt phẳng (ABC) cắt và vuông góc với đường thẳng d.         

Trong không gian với hệ trục tọa độ Oxyz, cho đường thẳng . Vectơ nào dưới đây là vectơ chỉ phương của ?

Trong không gian với hệ tọa độ Oxyz,cho hai điểm A(1;1;0) và B(0;1;2). Vecto nào dưới đây là một vecto chỉ phương của đường thẳng AB ?            

Trong không gian Oxyz, đường thẳng  đi qua điểm nào dưới đây ?        

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

Many people today would like the traditional two-parent family back, that is to say, they want a man and a woman to (31)______ for life; they also think the man should support the family and the woman should stay home with the children. However, few families now (32)______ into this category. In fact, if more women decide to have children on their own, the single-parent household may become more typical than the traditional family in many countries. Also, unmarried couples may decide to have more children – or they might take in foster children or (33)______. And because people are staying single and living longer (often as widows), there may be more one-person households. (34)______ the other hand, some people believe similar events happen again and again in history: if this is true, people may go back to the traditional (35)_____ or nuclear family of the past. Others think the only certainty in history is change: in other words, the structure of the future family could begin to change faster and faster and in more and more ways.  

Question 31:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

Many people today would like the traditional two-parent family back, that is to say, they want a man and a woman to (31)______ for life; they also think the man should support the family and the woman should stay home with the children. However, few families now (32)______ into this category. In fact, if more women decide to have children on their own, the single-parent household may become more typical than the traditional family in many countries. Also, unmarried couples may decide to have more children – or they might take in foster children or (33)______. And because people are staying single and living longer (often as widows), there may be more one-person households. (34)______ the other hand, some people believe similar events happen again and again in history: if this is true, people may go back to the traditional (35)_____ or nuclear family of the past. Others think the only certainty in history is change: in other words, the structure of the future family could begin to change faster and faster and in more and more ways.  

Question 33:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

BOOKS Nearly all the discoveries that have been made through the ages can (31)……in books. The invention of the book is one of humankind’s(32)………achievements, the importance of which can not be overestimated. Books are very adaptable, providing us with both entertainment and information. The production of books began in Ancient(33)………though not in the form that is accessible to us today. The books read by the Romans, however, have some similarities to the ones we read now. Until the middle of the 15th century, in Europe, all books were written by hand. They were often(34) …………illustrated and always rare and expensive. With printing came the possibility of cheap, large-scale publication and distribution of books making (35)………more widespread and recognizable.

Question 31:  

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

Nearly all the discoveries that have been made through the ages can (31)……in books. The invention of the book is one of humankind’s(32)………achievements, the importance of which can not be overestimated. Books are very adaptable, providing us with both entertainment and information. The production of books began in Ancient(33)………though not in the form that is accessible to us today. The books read by the Romans, however, have some similarities to the ones we read now. Until the middle of the 15th century, in Europe, all books were written by hand. They were often(34) …………illustrated and always rare and expensive. With printing came the possibility of cheap, large-scale publication and distribution of books making (35)………more widespread and recognizable.  

Question 32:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

Nearly all the discoveries that have been made through the ages can (31)……in books. The invention of the book is one of humankind’s(32)………achievements, the importance of which can not be overestimated. Books are very adaptable, providing us with both entertainment and information. The production of books began in Ancient(33)………though not in the form that is accessible to us today. The books read by the Romans, however, have some similarities to the ones we read now. Until the middle of the 15th century, in Europe, all books were written by hand. They were often(34) …………illustrated and always rare and expensive. With printing came the possibility of cheap, large-scale publication and distribution of books making (35)………more widespread and recognizable.  

Question 33:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

The expression on your face can usually dramatically alter your feelings and perceptions, and it has been proved that deliberately smiling or frowning can create corresponding emotional responses. The idea was first (24) _______ by a French physiologist, Israel Waynbaum, in 1906. He believed that different facial (25) _______ affected the flow of blood to the brain, and that this could create positive or negative feelings. A happy smile or irrepressible laughter increased the blood flow and contributed to joyful feelings. But sad angry expressions decreased the flow of oxygen-carrying blood, and created a vicious (26) _______ of gloom and depression by effectively starving the brain of essential fuel. Psychologist Robert Zajone rediscovered this early subject, and suggests that the temperature of the brain could affect the production and synthesis of neurotransmitters, which definitely influence our moods and energy levels. He argues that an impaired blood flow could not only deprive the brain of oxygen, but also create further chemical imbalance (27) _______ inhibiting these vital hormonal messages. Zajone goes on to propose that our brains remember smiling associated with being happy, and that by deliberately smiling through your tears you can (28) _______ your brain to release uplifting neurotransmitters replacing a depression condition with a happier one. People suffering from psychosomatic ailment, depression and anxiety states could benefit from simply exercising their zygomatic muscles, which pull the corners of the mouth up and back to form a smile several times an hour.

Question 25:        

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

The expression on your face can usually dramatically alter your feelings and perceptions, and it has been proved that deliberately smiling or frowning can create corresponding emotional responses. The idea was first (24) _______ by a French physiologist, Israel Waynbaum, in 1906. He believed that different facial (25) _______ affected the flow of blood to the brain, and that this could create positive or negative feelings. A happy smile or irrepressible laughter increased the blood flow and contributed to joyful feelings. But sad angry expressions decreased the flow of oxygen-carrying blood, and created a vicious (26) _______ of gloom and depression by effectively starving the brain of essential fuel. Psychologist Robert Zajone rediscovered this early subject, and suggests that the temperature of the brain could affect the production and synthesis of neurotransmitters, which definitely influence our moods and energy levels. He argues that an impaired blood flow could not only deprive the brain of oxygen, but also create further chemical imbalance (27) _______ inhibiting these vital hormonal messages. Zajone goes on to propose that our brains remember smiling associated with being happy, and that by deliberately smiling through your tears you can (28) _______ your brain to release uplifting neurotransmitters replacing a depression condition with a happier one. People suffering from psychosomatic ailment, depression and anxiety states could benefit from simply exercising their zygomatic muscles, which pull the corners of the mouth up and back to form a smile several times an hour.

Question 24:      

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 1 to 5:

In the past, it was common for three or more (1) ______ to live together in the same roof. Nowadays most elderly people live (2) ________their own. They generally stay in contact with their children or grandchildren but might live in the different part of the country. People also live together, often 20 years after they have (3) _________from their job. Modern American culture tends to value youth rather than age. This create an interesting challenge for older people and for the country. American families also have troubles. They are the divorce rate, the fact that working mothers might have (4)____________ time with their children, and the problems that parents and children sometimes misunderstand each other. (5)_________, family is still at the center of most people’s lives. 

Question 2:

Cho m gam hỗn hợp bột X gồm ba kim loại Zn, Cr, Sn có số mol bằng nhau tác dụng hết với lượng dư dung dịch HCl loãng, nóng thu được dung dịch Y và khí H2. Cô cạn dung dịch Y thu được 8,98 gam muối khan. Nếu cho m gam hỗn hợp X tác dụng hoàn toàn với O2 (dư) để tạo hỗn hợp 3 oxit thì thể tích khí O2(đktc) phản ứng là         

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 1 to 5:

In the past, it was common for three or more (1) ______ to live together in the same roof. Nowadays most elderly people live (2) ________their own. They generally stay in contact with their children or grandchildren but might live in the different part of the country. People also live together, often 20 years after they have (3) _________from their job. Modern American culture tends to value youth rather than age. This create an interesting challenge for older people and for the country. American families also have troubles. They are the divorce rate, the fact that working mothers might have (4)____________ time with their children, and the problems that parents and children sometimes misunderstand each other. (5)_________, family is still at the center of most people’s lives. 

Question 1: