问题
选择题
Many British people have noticed that butterflies _______ from its natural habitats during the past several years.
A．are disappearing
B．have been disappeared
C．have been disappearing
D．will have disappeared
答案
答案：C
考查动词时态与语态。根据时间状语during the past several years在过去的若干年，可知一直到现在，故用现在完成进行时，选C。