Nếu $\underset{0}{\overset{\frac{\pi }{3}}{\int }}\left[\sin x-3f\left(x\right)\right]\text{d}x=6$ thì $\underset{0}{\overset{\frac{\pi }{3}}{\int }}f\left(x\right)\text{d}x$ bằng

Why is Everglades National Park special?

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What kinds of animals are taken care of in Nairobi’s Orphanage?

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Where is Nairobi National Park?

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II. Read an article about national parks. Then answer some questions below.

National Parks

Have you ever been to a national park? Below are three of national parks in the world. They may be taken as reference for your travel list.

1. Cuc Phuong National Park, Vietnam

Cuc Phuong National Park is located 160 kilometres south west of Hanoi. It is the first of Vietnam's nine national parks to be established, and it contains over 200 square kilometres of rainforest. Tourists go there to study butterflies, visit caves, hike mountains and look at the 1,000-year-old tree. The best time to visit the park is during the dry season, from October to April, when the rainy season is over.

2. Nairobi National Park, Kenya

Nairobi National Park is Kenya's smallest park, but you may be surprised at the large variety of animals that live there. Visitors, especially children, can go there to learn how to recognise the different species of animals and plants. They also learn about the habits of animals and how one species is dependent upon another for survival. An interesting feature of this park is the Orphanage, where lots of orphaned or abandoned animals are taken care of.

3. Everglades National Park, USA

Everglades National Park is a sub-tropical wilderness in the southeastern United States. This national park is special because it has plants and animals from both tropical and temperate zones. Due to an increase in population and the use of nearby land for farming, there are toxic levels of chemicals in the water. This contamination has threatened the park and many of the animals in it.

Is June a suitable time to visit Cuc Phuong National Park? Why?

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Tập nghiệm của bất phương trình ${\log }_{\frac{1}{2}}x\le {\log }_{\frac{1}{2}}\left(2x-1\right)$ là

Even in some less populated (4)__________ provinces, over 20% of the work force is made up of children.

It was reported in Sichuan, China’s most (3) __________ province, that 85% of children who drop out of school are working elsewhere.

Although there is no official figure on the number of children working in China, it is (2) __________ by many that of the 10 million children out of school, over 5 million are working in factories.

Giá trị nhỏ nhất của hàm số $f\left(x\right)=-x^4+2x^2$ trên đoạn $\left[-2;2\right]$.

I. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

China’s child labour is a huge problem, and there is (1) _________ evidence that it is increasing in China. Although there is no official figure on the number of children working in China, it is (2) __________ by many that of the 10 million children out of school, over 5 million are working in factories. It was reported in Sichuan, China’s most (3) __________ province, that 85% of children who drop out of school are working elsewhere. Even in some less populated (4)__________ provinces, over 20% of the work force is made up of children. Also, in the last few years, the rate of children kidnapped has increased rapidly. It is believed that the children kidnapped are sold off to factories to work. For example, in 1994, about 48 Chinese brick-shop-workers kidnapped over 100 children. It is known that forty of those children were forced to work 10 hours a day, but with no (5) __________. China’s child labour cannot be overlooked.

III. Complete the sentences with the verbs in brackets. Use one verb in the past simple and one in the past perfect.

The film __________ (start) when we _______ (arrive) at the cinema because we were very late.

II. Fill in the sentences with “for” or “since”

I haven't been in Italy_________ July 2008.

Hãy giải thích vì sao các bệnh do vi sinh vật gây ra (bệnh tả, nấm,…) dễ xuất hiện và phát triển thành dịch ở vùng nhiệt đới hơn so với vùng ôn đới. Vì sao thực phẩm và đồ dùng ở vùng nhiệt đới rất nhanh bị hỏng nếu không được bảo quản đúng cách?

People go to a ___ if they want to send a letter abroad.

Không hút thuốc nhưng thường xuyên ngửi khói thuốc lá của những người hút thuốc xung quanh liệu chúng ta có nguy cơ bị bệnh ung thư không? Nếu có thì khả năng bị bệnh ung thư gì là cao nhất?

Dad hurt his back, but he got something from the ___ to help with the pain.

Let’s get some plants from the ___ for Mum’s birthday.

1. Choose the word /phrase (A, B, or C ) that best fits the blank space in each sentence

I want to buy a couple of magazines, so I’m going to the ___.

Vi sinh vật có thể hấp thụ được các chất hữu cơ có kích thước phân tử lớn như protein, tinh bột, lipid, cellulose bằng cách nào?

Vi khuẩn E. coli trong điều kiện nuôi cấy thích hợp cứ 20 phút lại phân đôi một lần. Số tế bào của quần thể vi khuẩn E.coli có được sau 3 giờ 20 phút từ một tế bào vi khuẩn ban đầu là.

Chọn ngẫu nhiên một số trong 18 số nguyên dương đầu tiên. Xác suất để chọn được số lẻ

Phát biểu nào sau đây là không đúng khi nói về quá trình tổng hợp ở vi sinh vật?

LISTEN to audio 3.09 about how people spent there holidays. WRITE T (True) or F (False) for the following statements (1-7.

Hilary is 50 years old.

I. LISTEN to audio 3.03 and MATCH the tourist attractions (1-4) with their correct countries (A-E), there are TWO countries that you DON’T NEED.

Phân giải ngoại bào đóng vai trò quan trọng trong quá trình phân giải ở vi sinh vật vì quá trình này

Trong môi trường nuôi cấy không liên tục, pha nào có mật độ vi khuẩn trong quần thể cao nhất ?

Hình thức sinh sản phổ biến nhất ở vi sinh vật là

Môi trường nuôi cấy không liên tục là

Nhóm vi sinh vật nào sau đây gồm toàn các sinh vật nhân sơ?

Phương pháp nhuộm Gram được sử dụng để phân biệt 2 loại vi sinh vật nào sau đây?