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【简答题】
阅读理解。 American schools begin in September after a long summer vacation (假期). There are two terms (学期) in a school year: the first term is from September to January, and the second is from February to June. Most American children go to public schools (公立学校). High school students take only four or five subjects at a time. They usually go to the same classes every day. After school they join many clubs. After high school (高中), many students go to college (大学). 1. American schools begin in _____. A. February B. September C. June D. January 2. How many terms do American children have each year? A. One. B. Two. C. Three. D. Four. 3. Students in the high school have _____ subjects at a time. A. four B. five C. six D. four or five 4. Which of the following is false (错误)? A. In July students don't need to go to school. B. Students usually go to the same classes every day. C. Students can't join many clubs after school. D. Most American children go to public schools. 5. After school students _____. A. do homework B. go back home C. join the clubs D. go to movies
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【单选题】下列程序的运行结果为（ ）。a = 75If a > 60 Then i = 1ElseIf a > 70 Then i = 2ElseIf a > 80 Then i = 3ElseIf a > 90 Then i = 4End IfPrint "i="; i
A.
i=1
B.
i=2
C.
i=3
D.
i=4
【单选题】下列程序的运行结果为( )。 a = 75 If a > 60 Then i = 1 ElseIf a > 70 Then i = 2 ElseIf a > 80 Then i = 3 ElseIf a > 90 Then i = 4 End If Print "i="; i
A.
i=2
B.
i=1
C.
i=4
D.
i=3
【单选题】下列哪种说法不正确
A.
体内代谢也能产生某些碱性物质
B.
正常饮食条件下，体内以产生酸性代谢物为主
C.
蔬菜和瓜果为碱性食物
D.
糖和油脂代谢产物也是碱性食物
E.
碱性食物主要使体内碳酸氢钠和碳酸氢钾增多
【单选题】当你输入95时，下列程序运行的结果是results = int(input('成绩为：'))if 100>=results>=90: print('A')elif 90>results>=75: print('B')elif 0<=results<75: print('C')else: print('输入错误！')
A.
A
B.
B
C.
C
D.
输入错误！
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