【题目】– The fellow has been suspected _________ e- mail fraud.
-- Nowadays cybercrime is developing __________ an amazing rate.
A. from; at B. about; in
C. of; with D. of; at
在线课程【答案】D
【解析】试题分析：考察介词固定搭配。固定搭配be suspected of被怀疑….；at an amazing rate以令人惊讶的速度。句意：—这个人被怀疑进行邮件欺骗。—现在的网络犯罪正在以令人惊讶的速度在发展。故D正确。