شرکت در آزمون آنلاین انگلیسی 3 - انگلیسی 3 | آزمون شماره 11208

It's fascinating to watch how a baby changes and .......... over time, but until one is two years old because from then on, one won't be that much cute!

Farmers have been experts at using solar energy for thousands of years. Almost every form of farming involves the use of the sun, effectively …A… the energy to produce forms of energy we need for life. In recent years, rising electricity costs have added to the costs that affect UK farmers and the profits of their businesses. It therefore shouldn’t come as any surprise that farmers and landholders in the UK are starting to understand the possibility of using unused roof space of …B… for farming. In addition to offering long-term protection from rising energy costs, along with cheaper electricity bills, solar energy is …C… .This means no greenhouse gases are produced and no natural resources are reduced. Besides, areas would look much more beautiful if all farmers …D… crops in solar farms.

A-

The word “this” in paragraph 1 refers to which of the following?