Cho bốn điểm không cùng nằm trong một mặt phẳng. Trên các đoạn thẳng và lần lượt lấy các điểm  sao cho đường thẳng cắt đường thẳng  tại . Điểm I thuộc những mặt phẳng :

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the closest meaning to the root one:

  The man suddenly realized that the neighbor was watching him.
  
  

• Read the following passage and choose the best answer for each blank:

        The UK Government ensures that all schools in the UK (1)_________ certain standards, and this includes independent schools as well as those that are (2)________ by the Government. All qualifications are awarded by national agencies accredited by the Qualification and Curriculum Authority (QCA), (3)_________ the quality of the qualifications you will gain is guaranteed.
        At many independent schools in England, you will be encouraged to take part (4)________ extracurricular activities to develop your hobbies and learn new skills, and you may be encouraged to take graded music exams (5) ___________ by the Associated Board of the Royal Schools of Music, or Trinity College. The exam grades gained from these are widely accepted toward university entry (6)__________ .
        Independent schools do not usually offer vocationally focused qualifications but if you are (7)________ in these qualifications, you can find out more in the
  "career-based and pre-university qualifications" section.
        The (8)__________ you pay to attend independent school, include your course fees, accommodation and may include some or all extracurricular activities. To check exactly what is included with the school you may be asked to pay extra for language tuition.
        Fees (9)__________ from school to school and are at the discretion of the institution; there are no national standards. You should expect to pay a minimum of £8,000 per year and fees can be (10)_______ high as £25,000.

   

  1. A. see	B. meet	C. notice	D. look
  2. A. run	B. worked	C. indicated	D. shown
  3. A. if	B. although	C. so	D. because
  4. A. for	B. in	C. on	D. of
  5. A. offer	B. to offer	C. offering	D. offered
  6. A. questions	B. troubles	C. problems	D. requirements
  7. A. interested	B. excited	C. concerned	D. worried
  8. A. bills	B. funds	C. fees	D. donations
  9. A. transfer	B. vary	C. exchange	D. interfere
  10. A. as	B. much	C. more	D. far

  
   
    

• Choose a word that has different stress pattern:

  university             application                 technology                 entertainment

• Choose a word that has different stress pattern: 

  mathematics             engineering               scientific               laboratory

• Choose a word that has different stress pattern:

  certificate              necessary              economy            geography

• Choose a word that has different stress pattern:

  interviewer               preparation               economics               education

• Choose a word that has different stress pattern:

  considerable              information               librarian                technician

• Find a mistake in the four underlined parts of the sentence and correct it:

  Higher education is very importance to national economies, and it is also a source of trained and educated personnel for the whole country.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Higher education in the United States specifically refers to post-secondary institutions, that offer associate

  degrees, master degrees or Ph.d. degrees or equivalents.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Higher general education is based on theoretical expertise and might be contrasted with higher vocational

  education, which concentrating on both practice and theory.