ACCORDING TO THE AUTHOR , THE IMPRACTICALITY OF USING COAL , OIL SH...

5. According to the author , the impracticality of using coal , oil shale and coal tars as sources ofenergy is due to...A. their being time consuming B. their being money consumingC. the scarcity of sources D. the lack of technologyQuestion 9: Choose the best answer (A,B,C or D) to fill in each blank: It was a Monday morning in the office and , as usual , everyone was busy sorting through their mailbefore starting work . The other staff had (1) ...that Nicky , one of the computer operators , hasbeen (2) ... rather miserable recently and they wondered what might have happened to makeher so ( 3 )... Suddenly Nicky accidentally (4)... over a cup of coffee. As she was clearingup the mess , the girl sitting next to her happened to glance at Nicky's right hand. There was a largeswelling at the (5)... " What on earth have you (6) ... to yourself ? Does it (7)...?asked the girl. "Yes , it does. I think I've (8) ... it using the computer," replied Nicky. "I thinkyou'd better go and let the doctor (9) ... it," said the girl. " Let's hope there's no permanent(10) ... to your hand".