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【单选题】
The plant “sumpweed” is mentioned in line 25 in order toA.
contrast a plant with high nutritional value with one with little nutritional value
B.
explain the medicinal use of a plant
C.
clarify which plants grew better in places where trees were not cut down
D.
provide an example of a plant that was easy to domesticate
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【单选题】The salesmen of that company succeeded _________ selling their new products.
A.
of
B.
on
C.
in
D.
with
【简答题】The salesmen of that company succeeded _________ selling their new products.
【单选题】在3D打印过程中,所谓的支撑(Support)是指:
A.
驱动3D打印机的软件是否可识别3D模型文件的格式
B.
3D打印机的厂家客服帮助顾客解决打印机的使用问题
C.
需要在3D模型悬空部分的下方额外打印落地的结构，以免悬空结构垂落
D.
3D打印机底部需要足够水平，以避免打印时出现倾倒或晃动
【单选题】Everyone of the salesmen who are waiting______that his products will be the ones selected.
A.
hoped
B.
hope
C.
had hoped
D.
hopes
【单选题】The salesmen of that company succeeded _________ selling their new products.
A.
in
B.
on
C.
with
D.
for
【单选题】The salesmen of that company succeeded _________ selling their new products.
A.
for
B.
with
C.
in
D.
to
【单选题】The salesmen of that company succeeded ____________ selling their new products.
A.
on
B.
in
C.
for
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