冬季不容易形成风暴潮的原因不包括（）。A、风向B、气压C、海平面高度D、降水

ZnCl₂法生产活性炭过程中有哪些主要因素影响活性炭的质量，各因素是怎样影响的？

______ two giraffes, Zheng He later brought zebras, shells, elephant ivory back to China after his

voyages.[ ]

A. Beside  

B. Except  

C. In addition  

D. Apart from

She ________ her story at the point where she stopped just now.   [ ]

A. took up      

B. took down    

C. took on     

D. took off

吸附力与哪项因素最有关（）

A.义齿基托组织面与粘膜接触的密合程度

B.唾液的质和量

C.是否用软衬材料

D.是否戴过旧义齿

E.基托的厚薄程度