问题
选择题
advertisements are of great help, I don't think we should entirely rely on them. [ ]
A. Since
B. While
C. Because
D. As
答案
答案：B
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advertisements are of great help, I don't think we should entirely rely on them. [ ]
A. Since
B. While
C. Because
D. As
答案：B
（2）F为美国的重要河流________，G为美国北部邻国________。
（3）该国地势中间较________，判断依据是____________________。
（4）该国东临H为________洋，西临K________洋。
（5）你能说出美国地跨寒温热三带的依据吗？
________________________________________________________________________________
（6）如果沿A城市到D城市方向做一剖面图，比较接近的是________。（填字母）
