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Bài tập về kiểu mảng trong pascal:
N<= 20.

* Hãy liệt kê phần tử có số lần xuất hiện nhiều nhất trong mảng.

Bài tập về kiểu mảng trong pascal
N<= 20.

Bài 1: Tính tổng bình phương các phần từ ở vị trí lẻ
Bài 2: Hãy liệt kê phần tử có số lần xuất hiện nhiều nhất trong mảng

*Bài tập Pascal về kiểu mảng:

( N<= 12)

Bài 1: Tính trung bình cộng các phần tử là ước của X với X được nhập từ bàn phím.

Bài 2: Hãy sắp xếp nửa mảng đầu tiên tăng dần, nửa mảng cuối giảm dần ( Với N chẵn, N lẻ phần tử giữa mảng làm trục đối xứng).

Bài 3: Thay tất cả các phần tử có giá trị âm bằng giá trị M với M được nhập từ bàn phím.

Bài 4: Hãy xét xem trong mảng các cặp số nào trong các số đó có quan hệ chia hết hay không? Nếu có in các cặp số đó ra màn hình.

Bài 5: Hãy xét xem trong mảng các cặp số nào trong các số đó mà số này bằng bình phương số kia hay không? Nếu có in các cặp số đó ra màn hình.

Bài 6: Hãy xét xem trong mảng các cặp ố nào trong các số đó màng tổng bình phương của chúng bằng 100 hay không? Nếu có in các cặp số đó ra màn hình.

Bài 7: Kiểm tra xem tổng các phần tử ở vị trí lẻ có bằng tổng các phần tử ở trí chẵn hay không?

Bài 8: Kiểm tra xem các phần tử ở ví trí chẵn có được sắp xếp tăng dần hay không?

Bài 9: Sắp xếp các phần tử lẻ về đầu mảng và các phần tử chẵn về cuối mảng , in mảng sau khi thay đổi.

Heathrow is a very busy airport. You can always see aeroplanes landing and take off.

A. see                            

B. a                      

C. busy                

D. take off

Cho sơ đồ chuyển hóa

F e ( N O ₃ ) 3 → t ^o X → + C O   d ư Y → F e C l 3 Z → + T F e ( N O ₃ ) 3

Các chất X và T lần lượt là

A. FeO và NaNO₃

B. Fe₂O₃ và Cu(NO₃)₂

C. FeO và AgNO₃

D. Fe₂O₃ và AgNO₃

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

Education is more important today than ever before. It helps people acquire the skills they need for such everyday  (1)_______  as reading a newspaper or managing their money. It also gives them the specialized training they may need to  (2)_______ for a job or career. For example, a person must meet certain educational requirements and obtain a  (3)_______  or certificate before he can practice law or medicine. Many fields, like computer operation or police work,  (4)_______  satisfactory completion of special training courses.

Education is also important  (5)_______  it helps people get more out of life. It increases their knowledge and understanding of the world. It helps them acquire the skills that make life more interesting and enjoyable,  (6)_______  the skills needed to participate in a sport, paint a picture, or play a musical  (7)_______ . Such education becomes  (8)_______  important as people gain more and more leisure time.

Education also helps people adjust to change. This habit has become necessary because social changes today take place with increasing speed and  (9)_______  the lives of more and more people. Education can help a person understand these changes and provide him  (10)_______  the skills for adjusting to them.

Điền vào ô 5

A. therefore

B. despite             

C. although          

D. because

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 newborn baby can see, hear and feel. By the age of five, a child can talk, ride a bike and invent imaginary friends. How does this development happen? We don't understand the way language, thinking and planning develop very well. Now scientists are using new technology to ‘see’ into children's brains. And they are discovering new information about the way a baby's brain develops.

A study in 2010 showed that the experiences a child has in their first few years affect the development of the brain. It showed that children who received more attention often had higher IQs. The brain of a newborn baby has nearly a hundred billion neurons. This is the same number as an adult's brain. As they grow, a baby receives information through the senses of sight, hearing, smell, taste and touch. This information creates connections between different parts of the brain. At the age of three, there are a hundred trillion connections.

One experiment looked at images of babies' brains while they were listening to different sounds. The sounds were in different sequences. For example, one sequence was mu-ba-ba. This is the pattern ‘A-B-B’. Another sequence was mu-ba-ge. This is the pattern ‘A-B-C’. The images showed that the part of the brain responsible for speech was more active during ‘A-B-B’  patterns. This shows that babies can tell the difference between different patterns. This experiment is interesting because sequences of words are important to grammar and meaning. Compare two sentences with the same words in a different order: ‘John killed the bear’ is very different from ‘The bear killed John.’ So babies are starting to learn grammatical rules from the beginning of life.

Researchers also know that babies need to hear a lot of language in order to understand grammar rules. But there is a big difference between listening to television, audio books or the internet, and interacting with people. One study compared two groups of nine-month-old American babies. One group watched videos of Mandarin Chinese sounds. In the other group, people spoke the same sounds to the babies. The test results showed that the second group could recognise different sounds, however the first group learned nothing. The scientist, Patricia Kuhl, said this result was very surprising. It suggests that social experience is essential to successful brain development in babies.

It can be inferred from the passage that 

A. A pattern like ‘A-B-C’ is easier to understand

B. Babies' brains cannot recognise different sound patterns

C. It's not known which area of a baby's brain processes speech

D. Children can actually learn grammatical rules in their very early age