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【多选题】
以下是蛋白质消化过程的有()
A.
胃蛋白酶原在胃酸作用下激活，分解蛋白质
B.
在胃中，胃酸pH=1-2,使蛋白质变性，结构打开
C.
蛋白质通过消化，变性
D.
胰腺分泌胰蛋白酶和蛋白酶继续分解蛋白质
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举一反三
【单选题】The passage suggests which of the following about changes in the earth's magnetic alignment?
A.
They are infrequent events, whose causes are yet to be conclusively established.
B.
They occur infrequently but at regular intervals, more often through the diffusion process than 'field regeneration'.
C.
They occur regularly, more often through the 'field regeneration' process than through diffusion.
D.
They occur frequently but irregularly, because 'field regeneration' is more often the cause.
E.
They occur irregularly, largely because they are dependent on the rare large changes in the flow of the earth's core.
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【单选题】听力原文：M: Can I have a single room for tonight, please? W: Sorry, sir. All our rooms are fully occupied. Where does this conversation most probably take place?
A.
At a bus stop.
B.
At a canteen.
C.
At a hotel.
D.
At a bank.
查看完整题目与答案
【单选题】听力原文：W: I'm sorry, sir. The train is somewhat behind. Take a seat, and I'll tell you as soon as we know something definite. M: Thank you. I'll just sit here and read a magazine in the meantime. What c...
A.
The train is crowded,
B.
The train is late.
C.
The train is empty.
D.
The train is on time
查看完整题目与答案
【单选题】下列关于“6”的叙述中，不正确的是（　　）
A.
1是最小的自然数
B.
1既不是素数，也不是合数
C.
1是奇数
D.
1能整除任何一个正整数
查看完整题目与答案
【单选题】听力原文：M: I'd like to check in, please. W: Awfully sorry, sir. There are no rooms available now. M: But I reserved a room the day before yesterday. W: Sorry. May I have your name? M: Tom White. W: Pleas...
A.
In the office.
B.
In a restaurant.
C.
At a hotel.
D.
In the bank.
查看完整题目与答案
【判断题】1是最小的自然数,也是最小的整数。
A.
正确
B.
错误
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【单选题】听力原文：W: I'm sorry, sir. You may not smoke here. W: Oh, sorry. I didn't see the sign. Q: What does the sign most probably say? (9)
A.
No Smoking.
B.
No Parking.
C.
Wet Paint.
D.
Keep off the Grass.
查看完整题目与答案
【单选题】阅读下面的教学论文（节选），按要求回答问题。描写就是把看到的东西，可能是一个人、一件物品、一个场景，告诉没有看到的人，通过自己的话语让其认识该事物。所以描写时，先要告诉别人“有什么”，让别人明白描写的对象；再告诉“怎么样”，使描写具体起来；还要告诉别人“像什么”，使描写变得更形象生动，这就需要运用一定的修辞。这里的“有什么”“怎么样”“像什么”就是描写三原则。下列选项的分析不正确的是（）。
A.
“有什么”“怎么样”是描写的基础，“像什么”是进一步的提升
B.
“像什么”是区别描写好坏的关键
C.
描写的三原则可以有效地指导学生写作
D.
“像什么”既包括对修辞的使用，又包括对词语的推敲
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【单选题】听力原文：M: This is the second time you have been late this week, Helen. W: I'm sorry, sir. M: You'll have to do better than that, or I might find it necessary to let you go. W: It won't happen again, I p...
A.
They are friends.
B.
They are teacher and student.
C.
They are employer and employee.
查看完整题目与答案
【简答题】最小的整数是1，最小的自然数也是1．______．（判断对错）
查看完整题目与答案
相关题目：
【单选题】The passage suggests which of the following about changes in the earth's magnetic alignment?
A.
They are infrequent events, whose causes are yet to be conclusively established.
B.
They occur infrequently but at regular intervals, more often through the diffusion process than 'field regeneration'.
C.
They occur regularly, more often through the 'field regeneration' process than through diffusion.
D.
They occur frequently but irregularly, because 'field regeneration' is more often the cause.
E.
They occur irregularly, largely because they are dependent on the rare large changes in the flow of the earth's core.
查看完整题目与答案
【单选题】听力原文：M: Can I have a single room for tonight, please? W: Sorry, sir. All our rooms are fully occupied. Where does this conversation most probably take place?
A.
At a bus stop.
B.
At a canteen.
C.
At a hotel.
D.
At a bank.
查看完整题目与答案
【单选题】听力原文：W: I'm sorry, sir. The train is somewhat behind. Take a seat, and I'll tell you as soon as we know something definite. M: Thank you. I'll just sit here and read a magazine in the meantime. What c...
A.
The train is crowded,
B.
The train is late.
C.
The train is empty.
D.
The train is on time
查看完整题目与答案
【单选题】下列关于“6”的叙述中，不正确的是（　　）
A.
1是最小的自然数
B.
1既不是素数，也不是合数
C.
1是奇数
D.
1能整除任何一个正整数
查看完整题目与答案
【单选题】听力原文：M: I'd like to check in, please. W: Awfully sorry, sir. There are no rooms available now. M: But I reserved a room the day before yesterday. W: Sorry. May I have your name? M: Tom White. W: Pleas...
A.
In the office.
B.
In a restaurant.
C.
At a hotel.
D.
In the bank.
查看完整题目与答案
【判断题】1是最小的自然数,也是最小的整数。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：W: I'm sorry, sir. You may not smoke here. W: Oh, sorry. I didn't see the sign. Q: What does the sign most probably say? (9)
A.
No Smoking.
B.
No Parking.
C.
Wet Paint.
D.
Keep off the Grass.
查看完整题目与答案
【单选题】阅读下面的教学论文（节选），按要求回答问题。描写就是把看到的东西，可能是一个人、一件物品、一个场景，告诉没有看到的人，通过自己的话语让其认识该事物。所以描写时，先要告诉别人“有什么”，让别人明白描写的对象；再告诉“怎么样”，使描写具体起来；还要告诉别人“像什么”，使描写变得更形象生动，这就需要运用一定的修辞。这里的“有什么”“怎么样”“像什么”就是描写三原则。下列选项的分析不正确的是（）。
A.
“有什么”“怎么样”是描写的基础，“像什么”是进一步的提升
B.
“像什么”是区别描写好坏的关键
C.
描写的三原则可以有效地指导学生写作
D.
“像什么”既包括对修辞的使用，又包括对词语的推敲
查看完整题目与答案
【单选题】听力原文：M: This is the second time you have been late this week, Helen. W: I'm sorry, sir. M: You'll have to do better than that, or I might find it necessary to let you go. W: It won't happen again, I p...
A.
They are friends.
B.
They are teacher and student.
C.
They are employer and employee.
查看完整题目与答案
【简答题】最小的整数是1，最小的自然数也是1．______．（判断对错）
查看完整题目与答案