作业帮Latex ____________obtained from the trunk of a rubber tree.a.are c.canb.is d.could
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Latex ____________obtained from the trunk of a rubber tree.a.are c.canb.is d.could
Latex ____________obtained from the trunk of a rubber tree.
a.are c.can
b.is d.could
Latex ____________obtained from the trunk of a rubber tree.a.are c.canb.is d.could
b
obtain意为“获得,获取”,此处be obtained为被动语态,“被救”.
选B
b
B