61. T
62. T
63. F
64. T
65. T
66. What are the other words or phrase for fossil fuels?
A. oil B. oil, gas, natural gas C. natural gas D. coal
67. Natural sources of energy are energy from __________ .
A. the sun, wind, water B. water C. wind D. the sun
68. From which do plants on the earth get energy?
A. the moon B. the sun C. stars D. the Mars
69. We are asking the question, “What will happen when there is no oil, coal, and gas on the earth?” because .
A. we are looking for other alternative sources of energy
B. we are looking forward to seeing great changes
C. we are now depending so much on oil, coal, and natural gas
D. other sources of energy can come from the sun, wind, and water
70. The word “abundant” in the passage is closest in meaning with .
A. natural B. necessary C. plentiful D. Limited
