皮皮学，免费搜题
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搜题
【单选题】
通过性菌,细菌可通过哪种机制发生遗传物质的转移:( )A.
转化
B.
转导
C.
接合
D.
溶原性转换
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The pretty girl is always busy helping her mother with the housework _________ I go to visit her family.
A.
every time
B.
every time when
C.
at every time
D.
however time
【单选题】-I saw Jane and her mother in the shop around eight yesterday evening. -Impossible. She TV with me in my home then.
A.
is watching
B.
was watching
C.
has watched
D.
had watched
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