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Điều nào sau đây đúng khi nói về hệ gen của tất cả các loại virut? a. Chỉ có ARN dạng chuỗi đơn b. Có thể là ADN hoặc ARN, chuỗi đơn hoặc chuỗi kép c. Có cả ADN và ARN, chuỗi đơn hoặc chuỗi kép d. Chỉ có ADN dạng chuỗi kép
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PART I Question I: Choose the word whose underlined part is pronounced differently from                      the others. (1,0 point) 1. a. call b. badly c. flat d. handkerchief 2. a. climb b. revive c. promise d. invite 3. a. crutch b. hurt c. bus d. cup 4. a. happened b. hurried c. burned d. rented Question II: Choose the best option A, B, C, or D to complete the sentences. (2,0 points) 1. Glass is broken up, melted and made into new........................... a. papper b. pipes c. shoes d. glassware 2.Is the rubbish....................every day? a. collect b. collecting c. collected d. be collected 3. Would you mind ........................ the door? a. to close b. closing c. about closing d. closed 4. Would you mind if I ............................your computer? a. use b. will use c. am going to use d. used 5. Binh asked me not ...............................anybody what happened. a. tell b. telling c. to tell d. told 6. At 8 o’clock last Sunday, he................... his grandmother.. a. are visiting b. has visited c. visit d. was visiting 7. It was kind ........................... you to help them. a. of b. from c. for d. to 8. Mrs Quyen went shopping when her husband was visiting the Statue of........................ a. four American presidents b. Liberty c. Alcatraz d. Empire State Question III: Give the correct form/ tense of the verbs (1,0 point) 1. What you (do).................. when he phoned you yesterday? 2. I (not see) ......................my uncle recently. 3. He has not been out since he (buy) ..............................a new color television. 4. Do you know the woman (talk)................................... to Nga? Your answer: 1.......................... 2........................ 3..................... 4. ....................... PART II: READING ( 3.0 POINTS) Read the passage and do the following exercises Ngan is a student . She is 20 years old. Last year She had a very interesting summer vacation with her classmates in a moutainous area in DaLat province . They went there to help make a road through a forest between two villages. It was very difficult because there was no water to drink and no shops where they could buy food . It was also very cold and wet. She stayed in the moutains for 2 weeks . It was hard work but She says it was her best thing she has ever done.She is hoping to return next year to do some more work there. 2 Exercise 1: Decide if the statements are true ( T ) or false ( F ) (1,0 point ) 1. She had a very interesting summer vacation with her classmates in a seaside area. ..... 2. It took her two weeks to stay in the moutains. ..... Exercise 2: Anwser the questions below (2,0 points ) 1.Where did Ngan and her classmates have summer vacation? ……………………………………………………………………………….………….. 2. Did they go there to help make house? ……………………………………………………………………………….…………. 3. How long did she stay in the mountains? ………………………………………………………………………………………….. 4. What is she hoping to do next year? …………………………………………………………………………………………. PART III: WRITING (3.0 POINTS) Question I: Rewrite each of these sentenses, beginning as shown, so that the meaning                        stays the same. (2,0 points) 1. Somebody has cleaned the room.  The room…………………………………………………...…………….. 2. Is it all right if I use your pen?  Do you mind……………………………………………………………….? 3.I get to work in half an hour.  It takes me…………………………………………………..………………. 4. Could you open the windows, please ?  Would you mind………………………………………………………….…..? Question II: Write complete sentenses, using the given suggestions. (1,0 point) 1. A lot of rice/ grow/ Viet Nam/ every year. ....................................................................................................................................... 2. We / learn / English / for nearly six years. ....................................................................................................................................... 3. I / surprised / see / Mai / the party / last night. ...................................................................................................................................... 4. The / celebration / will / hold / next week.. ..................................................................................................................................... ________The end_________

GIÚP MÌNH VỚI Ạ MÌNH ĐANG CẦN GẤP Ạ. THANKS. PLEASE Bài 2 Cho tam giác ABC nhọn đường cao AH (H nằm trên cạnh BC). Kẻ HE vuông góc với AB tại E. Kẻ HF vuông góc với AC tại F. a, Chứng tỏ: Tứ giác AEHF nội tiếp. (Đã làm) b, Chứng tỏ : ÉFH + ÁBC=90° và tứ giác FEBC nội tiếp. (đã làm) c, Gọi giao điểm của HE và BF là M; giao điểm của FH và EC là N.Chứng tỏ MN // BC. (Đã làm) d, ( khai thác thêm) Chứng tỏ KN . KB =KM .KC với K là giao điểm của EC và BF. Bài 3 Cho ABC nhọn nội tiếp (O) có Â = 60°. Các đường cao BE và CI của tam giác ABC cắt nhau tại H. a,Chứng tỏ tứ giác có 4 đỉnh H;O;B;C cùng thuộc một đường tròn. b, Gọi E là tâm đường tròn nội tiếp tam giác ACB. Chứng tỏ 5 điểm H; O; E; B; C cùng thuộc một đường tròn.

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