问题
单项选择题 A1型题
细菌对磺胺类药物产生耐药性的主要原因是（）。
A.细菌产生了水解酶
B.细菌代谢途径发生了改变
C.细菌产生了钝化酶
D.细菌体内抗菌药原始部位结构改变
E.细菌产生了大量的对氨基苯甲酸（PA-BA.
答案
参考答案：E
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细菌对磺胺类药物产生耐药性的主要原因是（）。
A.细菌产生了水解酶
B.细菌代谢途径发生了改变
C.细菌产生了钝化酶
D.细菌体内抗菌药原始部位结构改变
E.细菌产生了大量的对氨基苯甲酸（PA-BA.
参考答案：E
Linda and Mary are good friends. Linda is thirteen. She comes from the U.S.A. Mary is twelve. She’s from London(伦敦). They study in the same school, but in different classes. Linda’s father teaches English in a middle school. Her mother drives a car. Mary’s mother works in an office. Her father is a doctor. Linda can speak English, French(法语) and a little Chinese. Linda’s mother likes cooking. She likes eating rice. But Linda’ s father doesn’t. He likes drinking milk and eating bread. Mary’s mother doesn’t like cooking. But she likes doing some shopping. She can make nice skirts and dresses. Mary’s father likes doing housework(家务). 根据短文内容，完成下表。 小题1:.
②_________________________________________________________________________ ③_________________________________________________________________________ ④_________________________________________________________________________ ⑤_________________________________________________________________________ 根据短文内容，回答下列问题。 小题2:Where does Mary come from? _________________________________________________________________________ 小题3:What does Linda’s father do? _________________________________________________________________________ 小题4:Where does Mary’s father work? _________________________________________________________________________ 小题5:What can Linda speak? |