8. Put the verbs in brackets into the correct form of conditional sentence type 2. 1. If I (be) the president, I (pass) harder regulations for using fertilizers in agriculture. 2. If I (be) you, I (not eat) that genetically modified potatoes. 3. If big corporations (care) more about the environment and less about their own pockets, the pollution from factories (not increase) so fast. 4. He (sort) his trash, if he (be) smart. 5. If the seas (pollute) , maybe the population of whales (recover) . 6. If I (not throw) this can of Coke into the bushes, I (not know) that Coke is poison for wild animals. 7. If the factories (not dump) untreated waste into the ocean, fish (die) massively. 8. What (do) you if you (be) President. 9. If the air (not be) dirty, the breathing problems (reduce) . 10. If I (own) a lonely island, I (build) a huge house by the beach.

l. People eat dirty food. They can be cancer. 2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river is polluted. 3. Farmers use polluted water to water their plants. People eat these plants, they become sick with diseases such as diarrhea, bacterial inflections even cancer. 4. Thermal pollution takes place. The water temperature in streams, rivers, lakes and oceans will increase or decrease suddenly. 5. People live in radioactive pollution area. They can be skin cancer.

1. ___________________ habitats have been destroyed in recent years. (nature)

2. A number of cleaning products contain ____________ chemicals. (harm)

3. Water samples collected at these villages were seriously ___________ with bacteria. (contaminate)

4. People believe that the _____________ water has brought cancer to the local residents.

5. Light pollution make us __________ to see the stars in the sky. (able)

6. Noise is considered as ____________ pollution. (environment)

So sánh và giải thik độ dày các thành

1. When Little Red Riding Hood knocked at her grandma's door, the wolf............ in the grandma's bed. (lie)

2. A dragon ............... over the tower when he heard the princess cry for help.(fly)

3. Tam ................. when Buddha appeared. (cry)

4. While the grasshopper ................, the ant worked hard to store up food for winter. (sing)

Cho ΔHBC. Gọi D,M,E theo thứ tự là trung điểm của HB, BC, CH.

a) CM: tứ giác HDME là hình bình hành.

b) ΔHBC có điều kiện gì thì tứ giác HDME là hình chữ nhật.

c) Khi M di chuyển trên cạnh BC thì trung điểm I của HM di chuyển trên đường nào?