Debates have been going on     1     the subject of carbon capture. Scientists, especially engineers and geologists, have strongly criticized green groups who claimed that carbon capture and storage (CCS) schemes are costly mistakes.

The scientists insisted that such schemes     2     vital weapons in the battle against global heating. They also warn that failure to set up ways to trap and store carbon would make it     3     (possible) to meet the emissions target by 2050. “CCS is going to be the only effective way in the short term     4     (prevent) our steel industry, cement manufacture and many other processes from continuing to pour emissions into the atmosphere,” said Professor Stuart Haszeldine, of Edinburgh University. “    5     we are to have any hope of keeping global temperature increases down below 2 degrees Celsius, we desperately need to develop ways to capture and store carbon dioxide.”

Green groups claimed CCS would not make “a meaningful contribution to 2050 climate targets”. They say CCS was not reliable to decarbonize the energy system and that CCS has     6     history of over-promising and under-delivering. Instead, they urged the construction of more renewable energy plants     7     (give) priority.

But the claims     8     (dismiss) by engineers and geologists. “These claims are quite unfair,” said Michael Stephenson, director at the British Geological Survey.

A government spokesman for the Department of Energy and Climate Change said, “We are committed to meeting our climate change targets in a way     9     is affordable and provides secure energy to families and businesses. We are considering the role that CCS could play in decarbonization of the UK. But we also need to take government     10     (spend) into account. CCS had better come down in cost.”

The area of the Yellow River Wetland Park in Yinchuan, once a place local people avoided because of serious pollution, has not only become a popular destination for locals, but also a habitat frequently     1     (visit) by migratory birds.

The Yinchuan Wetland Park is only part of China’s achievements in the     2     (protect) of wetland. In the past few years, many cities     3     (award) “international wetland cities”,   showing     4     great variety of patterns and styles. For example, Wuhan, known as   “a city of a hundred lakes”, has five large wetland reserves, where tens of thousands birds come     5     (stay)in wintertime.

Liangping district in Chongqing, however, is     6     (total) different from natural wetland. It is more closely tied     7     human activity. People built small wetlands in rural areas. What’s more, they have combined these wetlands with organic farms, homestays and healthcare centers,    8     has resulted in an income increase of 52,000 yuan per household.

Panjin in Liaoning Province is another     9     (surprise) wetland city. In the past, the city suffered from environmental problems caused by oil production. But now in the coastal wetlands, seagrass turns a breathtaking red every autumn,     10    (create) beautiful   “red beaches”.

With the     1    (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because    2     air pollution.

Air pollution is caused by the     3    (follow) reasons : about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they   give off     4    (poison )   gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health,     5     to others. Besides these, about 10% of air pollution is caused by other reasons.

We should take some    6     (measure) to fight against pollution. New fuel can be used to take     7     place of gas. We can plant     8     (many) trees than before.     9     everybody realizes the importance of environment and does something to stop pollution, the problem will     10    (solve).

Pollution takes away all the beauty of the beaches of Hawaii. I hate to go to the beaches on       1     (sun) weekends and see rubbish bags lying on the sand, cigarette butts(烟头)     2     (bury) in the sand, and soda cans floating in the ocean.

One thing that really annoys me is that I see     3     (tour)who visit Hawaii leave their rubbish on the beaches. I was always taught after drinking soda to throw the can into the place     4     it should stay—the trash can. Another thing that annoys me is that some people walk right by rubbish     5     pretend that it’s not there.

The dogs or the fish are not to blame     6     it. It’s our fault and we must blame     7     (we). Everyone has to do his or her part     8     (solve) this problem. It can’t be difficult to do the job. There are a lot of things that we can do. First of all, we can help pick up rubbish along the beaches. We could also form organizations that help clean up our beaches. More     9     (important), we need to start now before the beaches     10     (damage) beyond repair.