慢性肾炎的临床表现是（）。

A.病情迁延，渐进性发展为慢性肾衰竭

B.有自愈倾向

C.起病缓慢、隐袭

D.蛋白尿、血尿、高血压、水肿

E.可有不同程度肾功能减退

The phenomenon that the earth is becoming warmer has attracted ______ attention.[ ]

A. a huge number of

B. a large sum of

C. a great deal of

D. a great many