黄白色稀薄有泡沫状白带，检查 * * 黏膜有散在出血斑点（）

A．滴虫 * * 炎 

B．念珠菌 * * 炎 

C．细菌性 * * 病 

D．老年性 * * 炎 

E．幼女性 * * 炎

13.  His ability is beyond question; _____ has been in doubt is ____ he is prepared to work hard

A．what; that

B．which; whether

C．what; whether

D．that; that