If you buy this machine, you can receive one hour training free of charge.
The example of Rembrandt&39;s painting suggests that a distinction should be made between______.
theory is used frequently to interpret light.
Our earth has been threatened by all kinds of pollutions.
Acid rain is a kind of air pollution which is hanging
over our heads and coming down from many different 【S1】__
ways such as rain and snow. It damages forests, lake and 【S2】__
rivers, buildings and even human health. Several
chemicals, including of sulfur dioxide, nitrogen 【S3】__
oxides and ozone, are involved in causing acid rain.
These chemicals either come directly from power
station chimneys and cars, and are formed from a 【S4】__
combination of pollutant gases. Sulfur dioxide is the
one chemical what is often associated with acid rain. 【S5】__
It is mainly emitted by large coal burning power
stations. It affect places thousands of miles away as 【S6】__
well as areas around the power stations. To prevent
more or worse environmental effects from acid rain, 【S7】__
we have short-term and long-term solutions. We should 【S8】__
just clean up our power station chimneys and car exhausts.
We should also change the way society thinks and reacts.
We need to conserve energy by decreasing efficiency. 【S9】__
We also need to change our way of transport, that is,
create a more efficient transport system which
depends less on private cars and more a good public 【S10】__
transport network. Everybody should work together
to save the world.
【S1】
____(这是我们梦想的完美的房子).Letstakeit.
In the traditional usage, sports refer to __ activities.