He spoke at a length about the reforms in his college.
参考答案:at a length→at length
痔脱出不能自行还纳
A.不凝固血液B.粪臭味液体C.稀脓性、略带臭味液体D.血性液体E.血性液,胰淀粉酶含量高
下面有效的IP地址是 ______。
A.202.280.130.45
B.130.192.33.45
C.192.256.130.45
D.280.192.33.456