【C7】A．exclusivelyB．practicallyC．shortlyD．directly

From the passage we learn that human brains.A．improved the art of speech exclusivelyB．deve

【C7】A．atB．toC．forD．over

【C7】A．ensureB．approveC．supplyD．deliver

【C7】A．adviceB．adviseC．advocateD．advance

【C7】A．concernsB．concernC．concerningD．concerned

【C7】A．entertainmentB．cureC．careD．training