【单选题】【消耗次数：1】
热带雨林深林储量占世界总储量的（）
①
A30%
②
B40%
③
C50%
④
D60%
参考答案：
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相关题目
【单选题】
四格表中，当a=30，b=60，c=40，d=50时，最小理论频数等于（ ）
①
70×110/180
②
90×90/180
③
70×90/180
④
90×110/180
【单选题】
对于亚马孙热带雨林，我们既要保护又要开发，正确的说法是（）
①
A.面对当前雨林正在遭到毁灭性破坏的严峻形势，首先应该把保护放在第一位，而考虑到当地人生活水平的提高，又要扩大森林的开发，因此亚马孙雨林的开发与保护这对矛盾不可调和
②
B.在雨林开发中应鼓励保护性的开发方式，如雨林观光、生态旅游等
③
C.在雨林的开发中应采用皆伐与更新造林相结合，达到既开发又造林的目的
④
D.对雨林的保护主要责任由当地来解决，其他国家没有权利和义务来承担责任
【单选题】
已知A、B、C三点坐标分别为（10、20、30）（20、40、60）、（30、60、90），则A、B、C三点______。
①
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③
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④
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无法判断
随机题目
【单选题】
2. You should deliberate over the question before you_______it.
①
response to
②
respond to
③
retellfrom
④
delete
【单选题】
Anna was reading a piece of science fiction, completely _____ to the outside world.
①
having been lost
②
to be lost
③
losing
④
lost
【单选题】
7. She is poor ______ she can hardly get anything to eat.
①
as much as
②
too much so that
③
so much so that
④
much more than
【单选题】
Of swimming and football he much preferred _____.
①
later
②
the later
③
former
④
the former
【单选题】
10. ______ radio ______ and try to find out what’s wrong with it.
①
Take…apart
②
Tell…apart
③
Cutting…into pieces
④
Separate…apart
【单选题】
3.Many American people lost their jobs in the economic_________of 1929.
①
emergency
②
crisis
③
time
④
stage
【单选题】
Many people complain of the rapid _____ of modern life.
①
rate
②
speed
③
pace
④
growth
【单选题】
_____his sister, Jack is quiet and does not easily make friends with others.
①
Dislike
②
Unlike
③
Alik
④
Liking
【单选题】
The assistant wrapped it _____ for her as quickly as possible.
①
round
②
about
③
in
④
up