每种语言都有明显的民族特点，不仅表现在语音和词汇上，同时也表现在语法上。

The difficulty which we had _______ with the local people has now been removed·

A．communication

B．to communicate

C．communicated

D．communicating

薄荷与蔓荆子的共同功效是____，____。

诊断感染性心内膜炎的最重要方法是（）

A.免疫学检查

B.心电图检查

C.X线检查

D.血培养

E.常规生化检查

长传快攻

--Could I borrow your CD of English songs? --（）

A.No,I am not available.

B.Thank you very much.

C.I’m sorry.It’s not at hand now.

D.It’s very kind of you.