以下（）等食物更适合于糖尿病患者。
A.燕麦、荞麦
B.大米、精白面
C.芋头、苦瓜
D.糕点、糖果
E.啤酒、饮料
参考答案：A, C
All Chinese people were very _____ at the _____ news happened on May 12th, 2008. [ ]
A. frustrated; frustrated
B. frustrated; frustrating
C. frustrating; frustrating
（）与（）体结合面结合不严密是造成喷油器漏油的原因。
A.针阀体；喷油器
B.高压油管；喷油器
C.柱塞套筒；喷油泵壳体
D.针阀体；喷油泵壳体
