Did you know that you do not have to be a chemist to invent something? An example of chemistry invention that was made by a non-scientist is Liquid Paper. In 1952, a divorced woman named Bette Nesmith Graham needed to work to support herself and her son. Life was very difficult for a single mother. [1] She soon found a job as a typist, but she was not very good at it. [2] She made a lot of errors typing leading her to formulate a white tempura paint to hide them. [3] Using her kitchen as a laboratory, she developed a liquid that other people wanted to buy and use. She named this liquid “Mistake Out” [4]

While continuing to work as a secretary, she educated herself in business methods, promotion, and research until she was satisfied that the product she had developed was really worthwhile. Sometimes around 1952 she offered “Mistake Out” to IBM, which turned it down. From 1952 until 1979 she continued to make and sell “Mistake Out”, now renamed “Liquid Paper”, out of her home. In 1979, the Gillette Corporation bought “Liquid Paper” for $47.5 million dollars plus royalties.

Question 36: Which of the following is the best title for this passage?

A. The Life of Bette Nesmith Graham B. The Process of Manufacturing “Liquid Paper”

C. How an Ordinary Person Became an Inventor D. The Importance of Science Education

Question 37: The author probably started this passage with a question in order to____.

A. catch the reader‟s attention

B. raise an objection against a non-scientist‟s invention

C. express curiosity about the history of invention

D. none of the above

Question 38:The word „formulate’ in bold in the first paragraph is closest in meaning to____.

A. use B. think about C. make D. correct

Question 39: What did Graham do at the same time that she educated herself in business?

A. She made and sold “Liquid Paper” B. She worked as a consultant for IBM

C. She worked as a secretary D. She continued inventing new products.

Question 40: What can be inferred abut Graham?

A. She was uninterested in science B. She was very determined to succeed

C. She was not ambitious D. She was a scientific genius.

Question 41:The word ‘it’ in bold in the second paragraph refers to___.

A. IBM B. „Mistake Out‟ C. research D. none of above

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Rút gọn

BÀI TẬP THÌ HIỆN TẠI ĐƠN:

Bài 1: Điền trợ động từ ở dạng phủ định.

1. I ..don't……. like tea.

2. He …does……. play football in the afternoon.

3. You …don't……. go to bed at midnight.

4. They…don't……. the homework on weekends.

5. The bus …does…….arrive at 8.30 a.m.

6. My brother …does…….finish work at 8 p.m.

7. Our friends ……do…. live in a big house.

8. The cat …does……. like me.

Bài 2: Chọn dạng đúng của từ.

1. Police catch/ catches robbers.

2. My dad is a driver. He always wear/ wears a white coat.

3. They never drink/ drinks beer.

4. Lucy go/ goes window-shopping seven times a month.

5. She have/ has a pen.

6. Mary and Marcus eat out/ eats out everyday.

7. Mark usually watch/ watches TV before going to bed.

8. Maria is a teacher. She teach/ teaches students.

. You will benefit from seeing the doctor if you've just got a cold. WORTH

=> .Your worth is from seeing the doctor if you've just got a cold...............................................................................................

Rewrite the following sentences based on the given words

1.The director offered him a good job,but he refused

➜The director......was turned down by him..................................... (turn)

2 My sister can't decide between Hanoi University and Vietnam National University to study

➜My sister can't decide which.....University to learn.............................................(to)

3.She shared with her mother about her problems at school,but she didn't feel better

➜She didn't......feel better when she had shared with her mother about her problems at school.........................................

II. Rewrite these sentences using "I wish / If only"

1. I don't know many people. I wish ....I could know many people..........

2. I can't give up smoking. If only ..I could give up smoking...............

3. I haven't got enough money for the concert. I wish .I had got enough money for the concert...............

4. George isn't here. If only ....George could be here.......

5. It's cold and I hate this weather. I wish it ...won't cold.......

6. I'm sorry because Tina can't come to my party. If only ..Tina could come to my party..........

7. He was driving very fast when he had the accident. I wish ...He hadn't been driving very fast.........

8. I have to work tomorrow and I'd like to stay in bed. If only .....I wouldn't have to work tomorrow......

9. My car is broken and I don't know anything about cars. I wish ...I knew anything about cars....

10. My husband didn't remember to bring his credit card with him on holiday.

If only ........My husband had remembered to bring his credit card with him on holiday...........................................................................................

11. I should have travelled more when I was young. I wish ....I had travelled more when I was young........

1. They rumoured that he man was still living in London

=> It was rumoured that the man was still living in London

2. People believe that 13 is an unlucky number

=> It is believed that 13 is an unlunky number

3. They declared that she won the competition

=> It was declared that she won the competiton

4. They know that English is an enternational language

=> It is know that english is an enternational language

5. They say that Jim is the brightest students in his class

=> It is said that Jim is the brightest students in his class

6. They think that he has died a natural death

=> It is thought that he has died a natural death

=> He has thought to have died a natural death

7. They reported that the troops were coming

=> It was reported that the troops were coming

8. People believed that the Earth stood still

=> It was belived that the earth stood still