下列哪种毒素属于副溶血弧菌的主要致病物质（）

A.耐热肠毒素

B.不耐热肠毒素

C.溶血素A

D.耐热溶血素

E.志贺样毒素

词汇 （共20 小题， 计20分）

A．根据句意和汉语提示写出单词，完成句子。

小题1:We had a __________ (美妙的) time in the park last week.

小题2:We’re going to have a hard time for a ________ (几个) of years.  

小题3:You can have any of the cakes __________ (除了…之外) this one.

B. 根据句意，用所给单词的适当形式填空。

小题4:The Great Wall runs across the ________ (north) part of our country.

小题5: --- Could you tell me how I can improve my English?

--- You’d better _______ (communication) with others in English as much as possible.

小题6:Danny and Daniel are brothers, and their ______ (wife) are sisters. That’s interesting. 

C．根据句意，用括号内所给动词的适当形式填空。

小题7:Jim ________ (not see) his father since his father went to work in Beijing.   

小题8:The bowls are empty. They ________ (eat) the food.

小题9:He was so happy and couldn’t stop _______ (take) photos.

小题10:We should take action _________ (protect) the animals in the world.