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1. The air is so dirty. I sneeze so much. CONDITIONAL SENTENCE TYPE 2
Trả lời: If the air weren’t so dirty,I wouldn’t sneeze so much
2. Their children have birth defects. The parents were exposed to radiation.BECAUSE
Trả lời: Their children have birth defects because the parents were exposed radiation
3. The air pollution causes breathing problems.LEADS
=>The air pollution leads to breathing problems
Combine the following sentences using the words in brackets.
1. Noise pollution happens. There is a change in animals' living pattern. (causes)
→ .............................Noise pollution causes a change in animal's living pattern.......................................
2. Radioactive pollution is very dangerous. It can cause abnormal growth. (since)
→ ...............................Radioactive pollution is very dangerous since it can cause abnormal growth.......................................
3. The area is uninhabitable. The Chernobyl nuclear accident happened. (made)
→ ............................The Chernobyl nuclear accident made the area unihabitable............................................
4. Fossil fuels such as coal or oil are burned. Acidgases are produced. (so)
→ ............. Fossil fuels such as coal or oil are burned, so acid gases are produced............................................................
5. Acid rain is dangerous. Trees' leaves are damaged. (because of)
→ ................ Because of the dangerous acid rain, trees' leaves are damaged .........................................................
6. Leaves are damaged. The tree cannot get enough food energy to stay healthy. (because)
→ ............................... Because leaves are damaged, the tree cannot get enough food energy to stay healthy..............................................
The search (26) for alternative sources of energy has led in various directions. Many communi- ties are burning garbage (27) and other biological waste products to produce electricity. Converting waste products to gases or oil (28) is also an efficient way to dispose of waste.
Experimental work is being done to derive synthetic fuels (29) from coal, oil, shale and coal tars. However that process (30) has proved to be expensive. Other experiments that are underway to harness power with giant windmills are also (31) being tested.
Some experts expect utility companies to receive hydroelectric power (32) derived from streams and rivers. Fifty years (33) ago hydroelectric power provided one third of the electricity used in the United States, but today it supplies only four percent. The oceans are another potential sources of energy. Scientists are studying ways to convert the energy of ocean currents, tides and waves (34) to electricity. Experiments are also underway to make use (35) of temperature differences in ocean water to produce energy.
fossil fuels such as coal or oil are burned, acid gases are produced