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在【】位置填上正确的代码。程序功能: 统计一个班级中某门课程的平均成绩。各个学生的课程成绩由键盘输入,当输入 -1 后,数据录入过程结束。
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A.
Would you prefer coffee?
B.
Please try to work with everyone.
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【单选题】My best friend is a happy girl. She always _______a smile ______her face.
A.
wear, on
B.
wears, on
C.
with, on
D.
wear, in
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