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【简答题】
用“五点法”作下列函数在[ 0,2 π ] 上的简图。 ( 1 ) y = sin x ( 2 ) y = sin x +1
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皮皮学刷刷变学霸
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【单选题】Air pollution, together with overpopulation, ______ many problems in big cities today.
A.
are causing -
B.
is causing
C.
are caused
D.
is caused
【单选题】What is the passage mainly about?
A.
How to fight air pollution in big cities.
B.
How to avoid air pollution in big cities.
C.
How to breathe fresh air in big cities.
D.
How serious air pollution is in big cities.
【单选题】What are highly esteemed in big cities?
A.
Living conditions.
B.
Sunshine and fresh air.
C.
Air-conditioned houses.
D.
A few flowers and a few leaves.
【简答题】桩基础 按成桩方法不同,桩基础可分为 和 两类。 沉入的方法有 、 、 等; 灌注桩施工因成孔机械不同,常用的方法有正循环回转法、反循环回转法等。
【简答题】At the big news, _____________________. A tears came out of his eyes B the boy jumping into air C he was first frozen and then jumped into air D tears blinded his eyes completely
【单选题】Most flights of Heaven Air go to ______.
A.
small towns
B.
big cities
C.
both big and small cities
D.
the very center of Africa
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