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1.Electric light bulb(Thomas Edison),Gramophone(Thomas Edison),Phone(Antonio Meucci and Alexander Graham Bell),Computer(Alan Mathison Turing )........
2.It's electric light bulb
3.It provides light for us to see
4.It illuminates us even at night
5.Speed train (imitated from the kingfisher and feather)
6.Help the train run at the fastest speed and limit the noise
7.Sonar technology
8.it is used to detect and locate, underwater
9.Mackintosh
10.Self-cleaning clothes
11.I want to invent a flying car
12.Thomas Edison with electric bulb
13.In 1880
Tick for me!
Marine pollution is a growing problem in today’s world. Our ocean is being flooded with two main types of pollution: chemicals and trash.
Chemical contamination, or nutrient pollution, is concerning for health, environmental, and economic reasons. This type of pollution occurs when human activities, notably the use of fertilizer on farms, lead to the runoff of chemicals into waterways that ultimately flow into the ocean. The increased concentration of chemicals, such as nitrogen and phosphorus, in the coastal ocean promotes the growth of algal blooms, which can be toxic to wildlife and harmful to humans. The negative effects on health and the environment caused by algal blooms hurt local fishing and tourism industries.
Marine trash encompasses all manufactured products—most of the plastic—that end up in the ocean. Littering, storm winds, and poor waste management all contribute to the accumulation of this debris, 80 percent of which comes from sources on land. Common types of marine debris include various plastic items like shopping bags and beverage bottles, along with cigarette butts, bottle caps, food wrappers, and fishing gear. Plastic waste is particularly problematic as a pollutant because it is so long-lasting. Plastic items can take hundreds of years to decompose.
This trash poses dangers to both humans and animals. Fish become tangled and injured in the debris, and some animals mistake items like plastic bags for food and eat them. Small organisms feed on tiny bits of broken-down plastic, called microplastic, and absorb the chemicals from the plastic into their tissues. Microplastics are less than five millimeters (0.2 inches) in diameter and have been detected in a range of marine species, including plankton and whales. When small organisms that consume microplastics are eaten by larger animals, the toxic chemicals then become part of their tissues. In this way, the microplastic pollution migrates up the food chain, eventually becoming part of the food that humans eat.
Solutions for marine pollution include prevention and cleanup. Disposable and single-use plastic is abundantly used in today’s society, from shopping bags to shipping packaging to plastic bottles. Changing society’s approach to plastic use will be a long and economically challenging process. Cleanup, in contrast, may be impossible for some items.
Nonetheless, many countries are taking action. According to a 2018 report from the United Nations, more than sixty countries have enacted regulations to limit or ban the use of disposable plastic items.
CHÚC BẠN HỌC TỐT!!
Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
47. Lan was busy last night, so she couldn’t join us.
A. If Lan wasn’t busy last night, she could join us.
B. If Lan was busy last night, she couldn’t join us.
C. If Lan hadn’t been busy last night, she could have joined us.
D. If Lan is busy tonight, she can join us.
48. He is introducing some new kinds of computers.
A. Some new kinds of computers are introduced.
B. Some new kinds of computers to be introduced.
C. Some new kinds of computers is being introduced.
D. Some new kinds of computers are being introduced
49. I like the picture which is hung on the wall.
A. I like the picture which I hung on the wall.
B. The picture which I like is hung on the wall.
C. I like the picture it hung on the wall.
D. The picture I like which is hung on the wall.
50. Offer your visitor a cup of tea.
A. Why don't you have a cup of tea?
B. Could you have a cup of
C. Would you mind having a cup of tea?
D. Will you have a cup of tea?
3.complete each sentece with one of the words in the box : (laptop, hard, downloaded, virusInternet, scanner, websites, floppy, surfing, sòtware, chat forum)
1. It's so easy to use a ..scanner.. when you want to send photographs ti friend by email. Its just like using a photocopier
2. I've lost a lot of data. I wonder if my computer has a ..virus..
3. I'm always impressed by people who carry their ..laptop.. on aeroplanes and work on them during the flight
4. Those ..floppy.. disks don't store nearly enough information. You really need to use your ..hard.. disk for all the data you want to store
5. If you want some photos of the usa. You could just try ..surfing.. the web. You'll be amazed hơw many you can find
6. I belong to a great ...chat forum.... there are about ten people who are all interested in 1960s music. We email one another almost every day, and can talk live to another
7. I ..downloaded.. a good program from the internet the other day. Would you like a copy
8. Do you ever visit any ..websites.. for pop stars or film stars? Some of them have photos and music to
9. ...Software... is the programs that you put into a computer to make it run
Mass and weight example - the moon
In the below example, we've featured an astronaut on earth and on the moon. The Moon's gravity is much less than the Earth's gravity - approximately one sixth. So, a 100 kg astronaut weighs 980N on Earth. On the Moon, the astronaut would weigh only 162.2N. However, the astronaut's mass is 100kg where-ever they are.
Weight on Earth: 100kg x 9.8m/s2 = 980N.
Weight on Moon: 100kg x 1.622 m/s2 = 162.2N.
1 Yes,i do. I often clean the floor, wash the clothes....
2 I had English , history,geography, physics, maths yesterday
3 I went to school by bike
4 My mother helps me with my homeworks
5I need to improve English
6 go straight ahead and turn right
7 I have learnt English for 5 years
8 I prefer city to countryside
9 My opinion of the countryside is that it is very peaceful.The air is fresh. The space is quiet. We can enjoy healthy natural conditions without worrying much about environmental pollution.
1. Yes, I have given money to charity on several occasions
2. I can help people in my community by volunteering my time, participating in community projects, and supporting local initiatives
3. Yes, I would like to be a member of an international organization to contribute to global causes and make a positive impact on a larger scale
4. Some benefits of volunteering activities include personal fulfillment, skill development, building a sense of community, and making a positive impact on others' live
5. No, there are no different rules for boys and girls at my school. Everyone is treated equally
6. No, I don't believe there are jobs that only men can do. Gender should not limit one's career choices, and everyone should have equal opportunities based on their abilities and qualifications