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提问人:网友cheng778
发布时间:2022-01-07
[主观题]
John's father _________ mathematics in this school ever since he graduated from Harvard University.
A.teaches
B.taught
C.has taught
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查看官方参考答案
A.teaches
B.taught
C.has taught
A、Two thirds
B、A third
C、Three fifths
D、One fourth
B、多出露于二级或二级以上阶地、山前和盆地边缘丘陵地带,地形较平缓,无明显自然陡
C、常见有浅层滑坡、地裂,新开挖坑(槽)壁易发生坍塌等现象
D、建筑物多呈“倒八字”、“X”或水平裂缝,裂缝随气候变化而张开和闭合
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