【C4】A．minimumB．averageC．idealD．maximum

【C2】A．besidesB．on averageC．in sumD．for example

【C2】A．poorB．averageC．idealD．disappointed

【C5】A．minimumB．maximumC．possibleD．practical

【C8】A．ordinaryB．averageC．commonD．credible

【C2】A．plainB．averageC．meanD．normal

【C3】A．mostB．averageC．normalD．common