The results showed that the structural characteristics of sexual propagation of Ag8(from Greece),Ag10(from Sichuan,China)and AgT(from Taiwan,China)is four basidiospores per basidium and two nuclei per basidospore.

As to guarantee insurance contract being an insurance contract or a guaranty contract, our na-tional laws don t give a definite definition,but there are different point-views coming from theory field and practice, judicial field and insurance field.

If the creditor loses guaranty depending on guaranty contract,which would be null and void,for fault in surety,the guarantor should bear fault liability during entering into a contract.