The writer feels confused by ______________________.
A. the information the professor is giving
B. the other students' questions
C. the fact that the Englisg persecuted the Irish
D. the fact that the women are busier scribbling than the men
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The writer wants to impress a girl with _________________.
A. how much he knows about Dostoyevsky and Melville
B. how clever he is
C. how much he knows about the histroy of education in America
D. how attractive he is
与一般的化学反应催化剂相比,酶具有( )的特性
A. 加快反应的速度
B. 降低反应的活化能
C. 所需的催化条件温和
D. 难失活
有氧呼吸不包括以下哪一过程( )
A. 糖酵解
B. 丙酮酸氧化
C. 三羧酸循环
D. 卡尔文循环
E. 氧化磷酸化
位于光合反应中心的色素分子是( )
A. 叶绿素a
B. 叶绿素b
C. 叶绿素c
D. 类胡萝卜素 EA和B
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