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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】已知某元素原子的价层电子构型是3s【图片】3p【图片】，则此元素的原子序数为 ，属于 周期 族区。
A.
17，三，ⅤA，p
B.
25，三，ⅤIIB，p
C.
23，三，ⅤB，p
D.
17，三，ⅤIIA，p
【判断题】Non-profit organizations such as universities and colleges show little interest in marketing.
A.
正确
B.
错误
【单选题】As the date of delivery______ in the S/C is approaching, we have to remind you that the covering L/C has not reached us.
A.
stipulates
B.
stipulated
C.
stipulating
D.
stipulation
【单选题】Non-profit organizations such as universities and colleges should not show any interest in marketing
A.
True
B.
False
【判断题】when getting a new job, a letter of recommendation is sometimes required by your new company.
A.
正确
B.
错误
【单选题】不论何种方式打开一个二进制文件，在文件打开方式（即第二个参数）中必须有（ ） 。
A.
ios::in
B.
ios::out
C.
ios::binary
D.
ios::app
【单选题】As the date of delivery _____ in the S/C is approaching, we have to remind you that the covering L/C has not reached us yet.
A.
stipulates
B.
stipulating
C.
stipulated
D.
stipalation