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【单选题】
直线 L的斜率为2,在y轴上的截距为3,则该直线的方程是()A.
2x-y-3=0
B.
2x-y+3=0
C.
2x-y-5=0
D.
2x-y-1=0
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反馈参考答案：
举一反三
【单选题】不正确的赋值或赋初值的方式是
A.
char str[6]={'s', 't', 'r', 'i', 'n', 'g'};
B.
char str[10]= "string"
C.
char *str="string"
D.
char str[10]; str="string"
【单选题】4-1、今欲配制pH=5.0、pCa=3.8的溶液,所需EDTA与Ca 2 + 物质的量之比[n(Y):n(Ca)]为[已知pH=4.0时,lgK ′ (CaY)=4.1] ( )
A.
1:2
B.
2:1
C.
2:3
D.
3:2
【判断题】As Jack lies under the bed, there must be somebody sleeping on top of it.
A.
正确
B.
错误
【简答题】夸美纽斯的幼儿教育观点主要有哪些?
【单选题】不正确的赋值或赋初值的方式是()
A.
char str[]="string";
B.
char str[7]={'s','t','r','i','n','g'};
C.
char str[10]; str="string";
D.
char str[7]={'s','t','r','i','n','g','\0'};
【简答题】夸美纽斯的幼儿教育观点主要有哪些?
【单选题】今欲配制pH=5.0、pCa=3.8的溶液, 所需EDTA与Ca2+物质的量之比[n(Y):n(Ca)]为[已知pH=4.0时,lgK'(CaY)=4.1]
A.
1:2
B.
2:1
C.
2:3
D.
3:2
【单选题】Which of the following is true according to the passage?
A.
People will all become short-sighted after they begin to go to school.
B.
Playing outdoors for 2 or 3 hours every day can help protect your eyesight.
C.
Children in Australia are more likely to get short-sighted than those in Singapore.
D.
If you spend two or three hours playing outside each day, you won’t get short- sighted.
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