. Read the passage. Complete each sentence with no more than THREE words.

The recent announcement from the Viet Nam government has claimed that Formosa – a Taiwan steel corporation based in Ha Tinh – was responsible for the mass fish deaths in central Vietnamese provinces in April and May 2016. According to this announcement, Formosa has discharged a significant amount of industrial waste, containing lots of harmful chemicals, into the ocean. This seriously polluted the water and killed the fish. The officials of the company, in a national correspondence meeting, apologized the Vietnamese people with a bow. Formosa would pay $500 million to treat the oceanic pollution and to compensate for economic losses of the region. However, according to environmentalists, it will take a long time for the ecosystem of the central Viet Nam to fully recover. In the mean time, local tourism and fishing industries have already been negatively affected. Due to the fear of polluted water and seafood, many tourists have cancelled their pre-booked tours to Ha Tinh, and fishermen haven’t been able to sell their fish to customers.

1. Formosa caused ______ fish deaths in Ha Tinh province.
2. The polluted water had many ______ and was dumped directly into the ocean.
3. The company promised to pay $500 million to treat the ______and to make up for economic losses.
4. ________ say that the polluted ocean will not restore its previous state very soon.
5. The incident has made tourists cancel their _______ to Ha Tinh.

1. Read the passage and fill in the blanks with the given words.

If you wander on the streets of Ha Noi, the capital of Viet Nam, you may be surprised that most people are wearing masks, hiding their faces. This is because of serious air 1. ____________ in this city. Between March 1 and 4, 2016, the air quality index of Ha Noi, as measured by the US Embassy in Ha Noi was over 350. At this level, air pollution can cause lots of respiratory 2. ___________, especially to children and the elderly. The major cause of air pollution in Ha Noi is traffic. Due to the increasing number of motorcycles and cars in the last decade, the 3. ____________ of chemical exhausts has been on a constant rise. Another reason is urban construction, including road 4. ____________ projects and residential buildings. People have to live with the dust and dirt throughout the city. Environmental experts have warned that if the city continues to develop its economy with little regard to the 5.__________, the consequence will be tragic.

1. What was Michael doing when the tornado came?
______________________________________
2. Was he warned about the tornado before?
______________________________________
3. Did his family run outside to escape?
______________________________________
4. What was his feeling at that time?
______________________________________
5. What was the bed made of?
______________________________________

writing about a type of pollution in your area.

Giải phương trình :

a, \(\dfrac{1}{x^2+9x+3}\) + \(\dfrac{1}{x^2+11x+30}+\dfrac{1}{x^2+13x+42}=\dfrac{1}{18}\)

b, \(\dfrac{1}{x^3+3x+2}+\dfrac{1}{x^2+5x+6}+\dfrac{1}{x^2+7x+12}+\dfrac{1}{x^2+9x+20}=\dfrac{1}{3}\)

Một bình hình trụ có diện tích đáy 0,25 \(m^2\) , chứa nước cao 70 cm . Nước có trọng lượng riêng 10 000 N/\(m^3\) .

a, Tính áp suất và áp lực của nước tác dụng lên đáy bình .

b , Thả một vật hình lập phương có cạnh 0,5m chìm trong nước .

Tính thể tích , lực đẩy Ắc-si-mét .

c, Trọng lượng riêng 8000 N/\(m^3\)

Vật nổi hay chìm ? Vì sao ? Tính lực đẩy Ắc- si - mét khi vật ổn định

Câu 1 : a, viết công thức tính lức đẩy Ac - si - met , đơn vị và tên đại lượng

b, Hai lực cân bằng là gì ?

Kết quả của hai lực cân bằng ?

+ Trong một mực chất lỏng ....

+ Áp suất ....

Chứng minh : \(4^n+15n-10⋮9\) với \(n\in N\)

Tứ giác ABCD có 2 góc đối A + C = 180 độ . E là giao điểm của AD và BC . F là giao điểm của AB và CD . Tia phân giác của góc E cắt AB và CD ở M và N . Tia phân giác của góc F cắt AD và BC ở H và K . Chứng minh rằng : MHNK là hình thoi .

Cho tam giác ABC vuông ở A có AH là đường cao , AM là đường trung tuyến . Qua H kẻ đường thẳng song song với AB và AC , lần lượt cắt AC ở E và AB ở D . DE cắt AH ở O và AM ở I

a, Tứ giác ADHE là hình gì ? vì sao ?

b, Chứng minh : \(\widehat{IEA=}\widehat{HAC}\)

c, Chứng minh : \(\widehat{IAE}=\widehat{HCA}\)

d, Tính \(\widehat{AIE}\)