Like many travel industries, the negative influences on the environment seem to outweigh the positive 【小题1】 (one). Though the cruise industry is relatively small compared to the airline industry, cruise ships and their passengers generate more waste and pollutant emissions while travelling and docked in port. A one-week voyage generates more 【小题2】 50 tons of garbage, and 3.78 million litres of waste water is produced. That is water 【小题3】 is harmful to the ocean life and cannot be poured back into the ocean without 【小题4】 (treat). These numbers are multiplied by more than 200 cruise ships sailing the word 365 days a year.

The way we cook is important. In many countries, the two choices are 【小题1】 (nature) gas or electric-powered stoves.

The World Health Organization warns that millions of people 【小题2】 (suffer) from indoor air pollution at present time, which results from the use of dangerous 【小题3】 (fuel) and cook-stoves in the home.

WHO officials say nearly three billion people are 【小题4】 (able) to use clean fuels and technologies for cooking, heating and lighting. As a result, more than seven million people die from exposure to indoor or outdoor air pollution each year. Most of the deaths are in 【小题5】 (develop) countries, such as lndia, China and Latin American countries.

WHO officials say opening a window or door 【小题6】 (let) out the harmful air will not correct the situation. 【小题7】 will only pollute the outdoors.

Nigel Bruce, 【小题8】 is a professor of Public Health at the University of Liverpool, says researchers are developing good cook-stoves and other equipment to burn fuels 【小题9】 a more efficient way.

But, this is just a start. It is urging developing countries to use 【小题10】(clean) fuels and increase access to cleaner and more modern cooking and heating appliances (用具).

E-TRASH

Nowadays, every household produces electronic trash (or e-trash)—an old TV or computer, a printer, or an out-of-date cell phone. But when we throw these everyday items away, not many of us know【小题1】they go. The journalist and photographer, Peter Essick, decided to follow this e-trash【小题2】several countries around the world.

In particular, Essick found that a lot of e-trash goes to Ghana. There, he saw【小题3】(mountain) of old computers in the local markets. The sellers resell some of them,【小题4】 not many work. Instead, they recycle the broken computers by melting the parts inside. These parts contain a little metal such as copper or even gold. However, this recycling process is【小题5】(danger) for the workers because【小题6】produces a lot of toxic chemicals.

As a result of his journey, Peter Essick thinks it’s important to stop 【小题7】(export) e-trash. It’s bad for the environment and it’s bad for【小题8】(people) health. Instead, he believes manufacturers need【小题9】 (produce) more eco-friendly electronics, in other words, electronic products that you can recycle cheaply, safely, and in the country where they【小题10】(make).