Cho đường tròn (O) và một điểm M nằm ngoài đường tròn. Từ M kẻ đường thẳng đi qua tâm O, Cắt đường tròn tại hai điểm A,B . kẻ đường thẳng thứ hai đi qua M, cắt đường tròn tại hai điểm phân biệt C,D (C khác A) Đường thẳng vuông góc với MA tại M cắt đường thẳng BC tại N đường thẳng NA cắt đường tròn tại điểm thứ hai là E

a, C/m tứ giác AMNC là tứ giác nội tiếp

b, C/m DE vuông góc với MB

Đặt một vật AB có dạng đoạn thẳng nhỏ, cao 2cm, vuông góc với trục chính của một thấu kính hội tụ, thấu kính có tiêu cự 10cm. Cách thấu kính 15cm

a) Dựng ảnh của vật AB theo đúng tỉ lệ

b) Ảnh là thật hay ảo.

c) Ảnh nằm cách thấu kính bao nhiêu cm? Ảnh cao bao nhiêu cm?

Mn ơi giúp e vs e sắp kiểm tra r :((((

cho cây ngô tự thụ phấn qua 7 thế hệ thấy chiều cao, năng suất giảm, chết. Hiện tượng đó là gì và nguyên nhân?

Find the word which has a different sound in the underlined part.
1. A. vision B. sense C. rinseless D. housekeeper
2. A. career B. applied C. alternative D. approach
3. A. telescope B. universe C. profession D. content
4. A. calm B. skillful C. logical D. cultivation
5. A. mechanic B. technical C. professional D. empathetic

In traditional Korean society, women's roles were confined to the home. From a young age, women were taught the virtues of subordination and endurance to prepare for their future roles as wife and mother. Women, in general, could not participate in society as men did, and their role was limited to household matters.

The situation began to change with the opening of the country to the outside world during the late 19th century. During this period modern schools were introduced, mostly by Western Christian missionaries. Some of these schools were founded with the specific goal of educating women. These educated women began to engage in the arts, teaching, religious work, and enlightening other women. Women also took part in the independence movement against the Japanese occupation, and displayed no less vigor, determination, and courage than the men.

With the establishment of the Republic of Korea in 1948, women achieved constitutional rights for equal opportunities to pursue education, work, and public life. There is no doubt that the female labor force contributed significantly to the rapid economic growth that Korea achieved during the past three decades. An increasing number of women work in professional fields.

Ex1: Find the word which has a...

1, A. housework B. vision C. hospital D. classroom

2, A. burden B. curtain C. turtle D. curriculum

3, A. responsive B. content C. sector D. sense

4, A. discussion B. provision C. permission D. cushion

5, A. evaluation B. facilitator C. guidance D. female

Ex2: Trọng âm

1, A. pressure B. whiteboard C. responsive D. whiteboard

2, A. drastically B. distinction C. enjoyable D. despondent

3, A. notification B. individual C. competition D. geographical

4, A. demolish B. syllabus C. industrial D. commercial

5, A. computer B. science C. theoretical D. facility

Ex3: Give the correct form of the verbs in the passive of simple future

1. Students academic performance (not evaluate) thought exems only

2. Classes (hold) also in places like restaurants or supermarkets

3. The School's curriculum (tailor) constantly to meet changes in society

4. Women ( free) from most housework by high technology

5. Not all the decisions in the family (make) by men

6. More flyovers (build) to reduce traffic in the city

7. We are staying at the Grand Hotel, which (demolish) for a department store

hoàn thành câu thứ hai để nó có nghĩa tương tự như câu đầu tiên sử dụng từ trong ngoặc

1.mark is too poor to buy that villa ( not )

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2. it's a pity we can not enjoy the party ( wishes)

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3. you shouldn't stay up too late ( were)

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4. "Don't swim far off the shore." Said the lifeguard to the boy ( against )

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Chọn và sửa lỗi sai

1.They have wrote to one another for a long time

2.He said that he was riding his bike on the way home now

3.the rock who they found last week may have landed on Earth from the moon

trong các tác phẩm truyện đã học ở lớp 9 nhân vật nào có suy nghĩ về lẽ sống như ước nguyện nhà thơ Thanh Hải ? Suy nghĩ của nhân vật ấy là gì và cao đẹp thế nào ?

Đọc đoạn văn và trả lời câu hỏi

The Earth was formed about 4.7 billion years ago. The Earth’s shape is very close to that of a sphere, not perfectly spherical. The Earth’s equatorial diameter is about 12,756 km, which is slightly larger than the polar diameter; about 12,714 km Surface Area of the Earth is 510,065,600 km2 of which 148,939,100 km2 (29.2 %) is land and 361,126,400 km2 (70.8 %) is water.
The Earth rotates on its axis, an imaginary straight line through its centre. The two points where the axis of rotation intersects the Earth’s surface are called as the poles, one of them is called the North Pole and the other is known as the South Pole. One rotation with respect to Sun is completed in 24 hours, called a solar day

1. When was the Earth created ?

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2. How is the Earth ?

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3 What main elements does the Earth include ?
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4. What are the places of the axis of rotation intersects the Earth's surface called?

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5. How long is a solar day completed?

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