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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】环形折返线,其优点在于( )。
A.
弱化了折返过程中的换线、调头过程，变为列车运行的过程，有利于提高列车运行速度
B.
可使列车来回换边，避免车轮偏磨
C.
占地面积大，施工量大，折返距离长，需要适合的地形条件
D.
线路延伸难度较小
【单选题】Even plants can run a fever, especially when they are under attack by insects or disease. But (71) humans, plants can have their temperature (72) from 3,000 feet away—straight up. A decade ago, (73) t...
A.
seeming
B.
clear
C.
apparent
D.
visible
【单选题】Even plants can run a fever, especially when they are under attack by insects or disease. But (71) humans, plants can have their temperature (72) from 3,000 feet away—straight up. A decade ago, (73) ...
A.
of
B.
in
C.
for
D.
on
【单选题】Even plants can run a fever, especially when they are under attack by insects or disease. But (71) humans, plants can have their temperature (72) from 3,000 feet away—straight up. A decade ago, (73) ...
A.
where
B.
which
C.
how
D.
when