Some birds can hardly find shelters in the south because______.
A. it is so sparsely populated that few people can watch them
B. the environment and ecosystem have been damaged in this area
C. places suitable for nesting have been occupied by human beings
D. deserted buildings and barns are not suitable for birds to make homes
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We know from the last paragraph that______.
A. people in the north are more obsessed with tidiness
B. where there are less human beings, there are more birds
C. cultural difference is not clear from south to north in England
D. people in the south enjoy decorating their gardens with green plants
The VHF radiotelephone calling/safety/distress frequency is ().
A. 156.8 MHz(channel 16)
B. 156.7 MHz(channel 14)
C. 156.65 MHz(channel 13)
D. 156.6 MHz(channel 12)
The following reasons may drive birds away EXCEPT______.
A. warmer winter
B. climate change
C. efficient farming
D. continuous rainfall
The number of species like garden warbler, bullfinch and swallow______.
A. goes up in southern England
B. increases in most parts of Britain
C. decreases dramatically in England
D. rises in the north and declines in the south
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