4. She was very tired but she tried to finish her work.
A. Although she was very tired but she tried to finish her work.
B. Although she was very tired, she tried to finish her work.
C. She was very tired, so she tried to finish her work.
D. She tried to finish her work because she was very tired.
III . Read the following passage and choose the best answer for each question :( 2,0 pts )
In Western countries, electricity, gas, and water are not luxuries but necessities. Companies now
realize that consumers want products that will not only work effectively, but also save money. For
most North American households, lighting accounts for 10 percent to 15 percent of the electricity bill
.However, this amount can be reduced by replacing an ordinary 100-watt light bulb with an energy-
saving bulb. These bulbs use a quarter of the electricity of standard bulbs and last eight times
longer.Therefore consumers can save about US$7 to US$ 21 per bulb .
In Europe, there is a labeling scheme for refrigerators, freezers, washing machines and tumble
dryers .The label tells the consumers how much energy efficiency each model has ,compared with
other appliances in the same category .Ultimately, these innovations will save money as well as
conserve the Earth’s resources
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