______
A. The plants that grow better will grow more quickly.
B. The plants that grow worse will die out eventually.
C. The plants will become less desirable for animals.
D. Animals will die of hunger because of the lack of plants.
______
A. Money and time.
B. Money and arrangements.
C. Time and arrangements.
D. Water supplies and fences.
______
A. Too much eating.
B. Too much unhealthy food.
C. Too little activity.
D. The overweight problem.
______
A. Eating less unhealthy food.
B. Increasing physical education in schools.
C. Advertising less for junk food.
Decreasing injuries in schools.
浏览器不支持音频______
A. Key obligations obeyed in modern democracies.
B. Key rights enjoyed in modern democracies.
C. Key obligations obeyed in modern politics
D. Key rights enjoyed in modern politics.