【C5】A．likeB．forC．byD．as

【39】A．likeB．as wellC．alikeD．as

【31】A．likeB．andC．orD．as

The second engineer seemed to know what the sign ______.A.stand byB.stand forC.stood byD.s

【C10】A．withB．forC．byD．against

【C17】A．likeB．thanC．forD．as

【C5】A．aboutB．forC．toD．as