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【单选题】
读环境、资源和人口关系示意图,完成下列各题 关于图中字母的含义 ,叙述不正确的是 ( )A.
a表示资源开发
B.
b表示生产活动
C.
c表示环境对人类的影响
D.
d表示废弃物排放
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举一反三
【单选题】______ birds use their feathers for flight, some of their feathers are for other purposes.
A.
Once
B.
If
C.
Although
D.
Because
【单选题】____birds use their feathers for flight, some of their feathers are for others purposes.
A.
Once
B.
If
C.
Although
D.
baecause
【单选题】During daylight hours, birds ______.
A.
fly aimlessly
B.
rely on landmarks
C.
use sun for guidance
D.
are more likely to get lost
【单选题】According to the author, which is the most feasible way to protect birds?
A.
Use fences to protect all the parks in the world.
B.
Try to protect wild space and nature.
C.
Abandon the economic values that birds can bring.
D.
Rely less on agriculture and return farmlands to forests.
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