【C2】A．ordinaryB．commonC．plainD．usual

A．opaqueB．bareC．plainD．bald

A．ordinaryB．sensitiveC．effectiveD．careful

【C6】A．ordinaryB．normalC．pervasiveD．universal

【C19】A．universalB．commonC．generalD．ordinary

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

It is clear that a（n)_____ student can understand it.A.ordinaryB.generalC.usualD.average