______a research student, i would at least master two foreign languages.
A. Should I become
B. I should become
C. Would I become
D. Have I become
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_____, you won't be able to do it alone.
A. However you try hard
B. You try hard however
C. However hard you try
D. Hard you try however
"Where is the man we talked about yesterday?""There_____."
A. he comes
B. comes he
C. he came
D. came he
橱窗的常见造型有哪些？
A. “L”型橱窗（拐角橱窗）
B. “一”字型橱窗
C. “O”型 橱窗
D. “二”字型橱窗（双层橱窗）
关于“L” 型橱窗的说法正确的？
A. 一般处于店铺的拐角之处。
B. “L” 型橱窗一般空间、面积较大，需要兼顾两个通道的视觉展示效果。
C. “L” 型橱窗常出现于大型店铺，或处于拐角位置的店铺。
D. 拐角既有直角，也有圆弧角和不规则角度等。
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