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【单选题】
精准农业技术发展趋势是( )。A.
无人化、智能化、网络化、标准化
B.
农机无人驾驶，智能化农机设备，农业物联网，标准化
C.
农业信息快速低成本实时采集，农业专家决策，智能化农机设备，农业物联网，标准化
D.
自动化、智能化、标准化
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皮皮学刷刷变学霸
举一反三
【单选题】-Your sweater looks very nice. What’s it made__________? -Wool, and it’s made__________ Guiyang. [ ]
A.
from, on
B.
of, in
C.
of, on
D.
from, in
【单选题】听力原文：W: The product is very light. What's it made of? M: It's made of plastic. But it's very strong. Q: What can we learn about the product? (4)
A.
It is heavy.
B.
It is soft.
C.
It is made of plastic.
D.
It is strong and heavy.
【单选题】( )12.“What’s this? ”“ ________. ” ( )44.“What’s that? ”“ ________. ”
A.
It’s pen
B.
This is pen
C.
It’s a pen
D.
This is an pen
【单选题】— What is your scarf made ______? — Silk, and it’s made ______ Hangzhou.
A.
in, of
B.
of, by
C.
of, in
D.
by, in
【单选题】There is today's newspaper.
A.
nothing new in
B.
something new on
C.
important something in
D.
nothing important on
【简答题】标准正态分布的均值为1，标准差为0。（ ）
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