Chủ đề:

Bài 1. Máy tính và chương trình trong máy tính

Câu hỏi:

nhập 1 dãy số nguyên không quá 1000 phần tử, các giá trị a[i] <= 100. tính tổng các phần tử đã nhập và trung bình của dãy

Chủ đề:

Luyện tập tổng hợp

Câu hỏi:

I. Choose the word in each line that has different stress pattern. 1. A. scientific​B. dramatic​C. athletic​D. domestic 2. A. national​B. chemical​C. medical​D. informal 3. A. prehistoric​B. economic​C. linguistic​D. optimistic 4. A. medical​B. hospital​C. politic​D. electric 5. A. physical​B. horrific​C. beautiful​D. different II. Give the correct form of the words given to complete the sentences. 1. The ……….. of lakes, rivers, oceans or underwater causes water pollution CONTAMINATE 2. The street doesn’t look …………….. because it has a lot of rubbish.​ ATTRACT  3. The music club made so much noise that the………complained to its owner. 4. Are all types of pollution…………to the health of humans and HARM animals? RESIDE  5. The …………….. are concerned about the oil spills in East Sea. ENVIRONMENT 6. Dumping………….waste into the lakes and rivers has caused INDUSTRY serious water pollution. 7. Many people in this area have cholera because they drink …………… TREAT water. 8. Examples of primary……….are exhaust fumes from cars, soot POLLUTE from smoke and ash from volcanic eruption.  9. If we use water …………….., more people will have fresh water.​CARE  10. The polluted water results in the…………..of many aquatic animals DIE and plants. III. Combine the sentences in each pair into a new sentence that shows a cause – effect relationship. Use the words in brackets. 1. Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes. (because) …………………………………………………………………………………………….. 2. The environment is polluted. Birds leave their habitats and plants die. (makes) …………………………………………………………………………………………………….. 3. Plastic bags are a major source of waste. We should not throw plastic bags everywhere. (so) …………………………………………………………………………………………………….. 4. The food is contaminated. People’s health is poor. (results in) …………………………………………………………………………………………………….. 5. Factories release fumes. The air people breathe gets polluted. (due to) …………………………………………………………………………………………………….. IV. Put the verbs in brackets into the correct form to complete the sentences. 1. If the local people drink the contaminated water, they (have)……..health problems. 2. If there were more trees in this area, the air (be)………….fresher. 3. All the aquatic animals (die) …………….. if people don’t stop dumping sewage into the lake. 4. Global warming (not happen)…….if there weren’t too much carbon dioxide in the atmosphere. 5. If the sun (shine)…………., we will walk to the mountain. 6. If people (stop) …………….. digging the street, there wouldn’t be noise pollution in this area. 7. People use a lot of cars and motorcycles. If people (reduce) …………….. the use of motor vehicles, there (be)​less serious air pollution.  8. If you (not read) …………….. these articles, you (not know) …………….. the facts about water pollution. 9. If I (be) …………….. the president, I (remove)​all the factories out of the city. 10. Your brother (have) …………….. hearing problems if he (listen)​to too loud music.