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【简答题】
食物链、食物网是生态系统的营养结构，生态系统的物质循环和能量流动是沿着此渠道进行的。假如在某温带草原上存在如右图所示的食物网。请分析回答： 该生态系统的成分中，草属于（），猫头鹰属（），兔处于第（）营养级。
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【单选题】The Greens ________ in Paris but now they ________ China. They like China.
A.
are used to living; used to live
B.
used to live; are used to living
C.
use to live; used to live
D.
used living; used to living
【单选题】《四民月令》描绘了东汉晚期靠农业供养一个大型家族、并靠出售剩余农产品和手工制品增加收入的庄园。下列工具在庄园中可能出现的有( )
A.
①②
B.
③④
C.
①③
D.
②④
【简答题】What problem is China now facing, in the aspect of consuming oil?
【单选题】The Greens ______ in Paris and now they________ in China. They like China.
A.
used to live; are used to living
B.
are used to living; used to live
C.
use to live; used to live
D.
used living; used to living
【单选题】《四民月令》中描绘了东汉晚期靠农业供养一个大型家族、并靠出售剩余农产品和手工制品增加收入的庄园。下列工具在庄园中可能出现的有 ( )
A.
①②
B.
①③
C.
②④
D.
③④
【单选题】By now, it should come as no surprise when scientists discover yet another case of experience changing the brain. From the sensory information we absorb to the movements we make, our lives leave footp...
A.
the assumption that human experience can change human brain structure has already been widely proved
B.
human experience can change brain structure
C.
stroke patients can restore mobility by themselves
D.
people blindfolded for several days can still have visual ability
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