vì sao nói virus chưa có cấu tạo tế bào điển hình ? em có đồng ý với ý kiến cho rằng virus là vật tể không sống ? giải thích

Practice 18

I. Complete using the plural form of the word in the box.

1.      Did you kow that Jacson’s dog has had three beautiful...............................  ?

2.      The Spice Girls was an all- girl band, so there weren’t any.................

3.      It’s a bit strange that Victor wears two.........................- one on each arm.

4.      If .......................do the same jobs as their husbands, they should be paid the same.

5.      The dentist says I have to have two..............................taken out!

6.      How many................................were there at the show ?

7.      We’ve walked miles ! My ...........................are hurting !

8.      Mrs Jenkins has just had a baby, so she’s got three.........................now.

tính tổng sau :A =1+3+3² +3³ +...+ 3¹⁰⁰

VIII. Write an email (about 100 words) to your friend to talk about your favorite TV progamme.

tế bào phân chia (sinh sản) như thế nào ? khả năng lớn lên và phân chia tế bào có ý nghĩa gì với cơ thể sống

tại sao nói"tế bào là cơ bản của sự sống"

VII.Complete the second sentence including the given word so that it means the same as the first.

1. Because I am intereted in the history of television, I’ve read a lot of books about it.  (SO)

=> I am _______________________________________________________________

2. Ho Chi Minh City is the most crowded city in Viet Nam.   (AS)

=> No cities in _________________________________________________________

3. Could you tell me the way to the police station? (HOW)

=> Could you tell ______________________________________________________?

4. I last saw him 2 years ago.  (FOR)

=> I haven’t___________________________________________________________

5. I would like to buy 500 grams of sugar. (KILO)

=> I would like to__________________________________________________

6. We mustn’t throw garbage on the roads.   (WRONG)

=> It is_____________________________________________________________

7. Let’s go out and have an ice cream.    (GOING)

=> What about_______________________________________________________?

8. I began collecting dolls when I was ten years old.    (COLLECTED)

=> I have___________________________________________________________

VI. Read carefully and choose the best answer to complete the following passage

How can we keep our teeth healthy?

                      Firstly, we (1)_____ to visit our dentist twice a year. He can fill the small holes in our teeth (2)______they destroy the teeth. He can examine our teeth to check that they are growing in the right way. Unfortunately, many people wait until they have toothache before they see a dentist.

                      (3)_______, we should brush our teeth with a toothbrush and fluoride toothpaste at least (4)_________ – once after breakfast and once before we go to bed. We can also use wooden toothpicks to (5)______ between our teeth after a meal.

                      Thirdly, we should eat food that is(6)______ for our teeth and our body such as milk, cheese, fish, brown bread, potatoes, red rice, raw vegetables, and fresh fruit. Chocolate, sweets, biscuits and cakes are bad, (7)_______ when we eat them between meals. They are harmful (8)_______they stick to our teeth and cause decay.

Answer:

V. Complete the telephone conversation. What does Peter say to James?

EXAMPLE                                                                  ANSWER

James: Hello, 345920.                                                        Peter: ___G____

Answer: