cho hình vuông ABCD gọi E, K lần lượt là trung điểm của AB và CD. O là giao điểm của AK và DE kẻ \(DM\perp CE\)

a) chứng minh tứ giác ABKE là hình chữ nhật

b) chứng minh \(AK\perp DM\)

c) AK cắt BM tại N chứng minh tam giác ADM cân. tính góc ANB

cá voi, cá heo có quan hệ họ hàng gần với hổ, báo, sư tử hơn cá chép

giải thích mối quan hệ họ hàng của các loài động vật thông qua ví dụ cụ thể

Hãy sắp xếp nhóm từ trong cột Nhóm và cột Sinh vật đại diện của bảng trên thành các cặp ý tương ứng

Đáp án:

những thủy sản có giá trị xuất khẩu lớn trong thời gian gần đây

vật nuôi non tiếp xúc nhiều với ánh sáng nhằm mục đích gì

IV. Reading:

1. Vietnam's New Year is celebrated according to the Lunar calendar. It is especially know as Tet Nguyen Dan, or Tet. It begins between January twenty- first and February nineteen. The exact date changes from year to year. Vietnamese people usually make preparations for the holiday several weeks beforehand. They tidy their houses, cook special food, clean and make offerings on the family altars. On the New Year's Eve, people sit up to midnight to see New Year in, then they put on new clothes and give one another the greetings of the season. Tet lasts ten days. The first three days are the most important. Vietnamese people believe that how people act during those days will i fluence the whole year. As a result, thay make every effort to avoid arguments and smile as much as possible.

2. Brazil's most popular and festive holiday is Carnival. In fact, many peole (1)....Carnival one of the world's biggest celebrations. Each spring, on the Satuday before Ash Wednesday, then steets of Brazil's largest city, Rio de Janeiro, come alive (2)....parties, festivals and glamorous dances.

 The Samba School Parade is the highlight of the (3)....event. About 300 performers, in colourful costumes embellished with feathers, beads and thousands of sequin dance down the parade route into the Sambadrome - a dance stadium (4)....for the event. Judges award a (5)....to the most spectacular group of dancers.

3. Yesterday, on the way home from school, I saw an accident. A boy was run over by a taxi when he was riding his bicycle. The boy's leg was broken and it was bleeding badly. Someone there tried to stop the bleeding. They put pressure on it and held it tight. A man used his mobile phone to call the emergency service. Some minutes late, an ambulance arrived and sent the boy to the hospital. Two policemen came to the scene immediately. Some people told the police that the taxi driver was driving at a very high speed when the accident happened. Some others began talking about the traffic accidents these days and blamend the increasing number of accidents on the roads for careless driving and drunk drivers.

4. When you are in Singapore, you can go about (1)....taxi, by bus, or by underground. I myself prefer the underground (2)....it is fast, easy and cheap. There are (3)....buses and taxis in Singapore and one cannot drive along the road (4)....and without many stops, especially on Monday morning. The underground is therefore usually quickes (5)....taxis or buses. If you do not know Singapore very well, it is difficult (6)....the bus you want. You can take a taxi, but it is (7)....expensive than the underground or a bus. On the underground, you find good maps that (8)....you the names of the stations and show you (9)....to get to them, so (10)....it is easy to find your wat.

1.   A. by          B. in                 C. at              D. on

2.   A. but         B. because      C. when         D. so

3.   A. few         B. a lot             C. many        D. some

4.   A. quick      B. quickly        C. quicker      D. quickest

5.   A. so           B. like             C. than           D. as

6.   A. find         B. to find         C. finding       D. found

7.   A. less         B.more           C. most          D. much

8.   A. tell           B. told            C. tells           D. telling

9.   A. who         B. what          C. when         D. how

10. A. how         B. that            C. when         D. where

15. Brain Stone is a famouns singer. He can't sing folk songs. (Despite)

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16. When/ people/ celebrate/ Diwali ? (sentence building)

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13. She felt entertained when she watched a gripping film. (Make a question)

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14. It is 10 kilometers from here to ACB bank. (Make a question)

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