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【单选题】
pH对酶促反应速度的影响，下列叙述错误的是A.
最适pH是酶的特征性常数
B.
酶的最适pH不是酶的特征性常数
C.
pH通过影响酶和底物的解离而影响酶促反应速度
D.
最适pH是酶促反应速度最快时的环境pH
E.
pH过过低可使酶发生变性
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【单选题】听力原文：M: Mary is an American, but she has lived in Asia for most of her life. W: Yes. She speaks Japanese and Chinese as well as she speaks English. Q: What nationality is Mary? (5)
A.
Japanese.
B.
American.
C.
Chinese.
D.
English.
【简答题】简述学习策略的类型。(2012年上半年真题)
【简答题】I’m Li Fen. I have a pen pal. name is Mary. She is from Canada. She lives in Toronto. She speaks English. She has brother ,but she has no sisters. Her favorite is art. Two of my good friends pen pals,...
【单选题】以下对一维数组的定义中不正确的是哪一个?
A.
char ch1[]={'1','2','3','4','5'};
B.
double x[5]={2.0,4.0,6.0,8.0,10.0};
C.
int y[5]={0,1,3,5,7,9};
D.
char ch2[]={'\x10','\xa','\x8'};
【单选题】When we get a call from someone who speaks English,what should you speak in English.
A.
Hello, This is Mary speaking.
B.
Who are you?
C.
How are you.
D.
who’s the caller?
【单选题】Mary wants to learn to study in England so she often practices_________ English with her friends.
A.
speaks
B.
to speak
C.
speaking
D.
spoken
【单选题】以下对一维数组的定义中不正确的是哪一个?
A.
int y[5]={0,1,3,5,7,9};
B.
char ch1[]={'1','2','3','4','5'};
C.
char ch2={'\x10','/xa','/x8'};
D.
double x[5]={2.0,4.0,6.0,8.0,10.0};
【简答题】听句子，选择意义相近的选项。 ( ) 1. A. Mary is good at English and she helps me learn it well. B. Mary speaks English we]l and often helps me with it. C. Mary often has a talk with me in English. D. Mary and I ...
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