“大实有羸状”的证候性质是()
A.实证
B.虚证
C.真虚假实证
D.真实假虚证
E.虚实夹杂证
参考答案：D
I’m sure you will do better in the test because you ________ so hard this year.
A．studied
B．had studied
C．will study
D．have been studying
电磁铁是由哪几部分组成？各部分有哪些作用？
