问题
选择题
Chemical pollution will bring about a threat to agriculture and food chain, and
to human health.
A．frequently
B．significantly
C．steadily
D．consequently
答案
答案：D
题目分析：考查副词。A. frequently频繁地；B. significantly意味深长地；C. steadily稳定地；D. consequently因此。句意：化学污染将给农业和食物链带来威胁，因此也会对人类健康带来威胁。故D正确。