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【简答题】
溺水者持续时间一般最长约 秒左右。
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举一反三
【单选题】-- What do you think of Miss Wang, your English teacher? -- She’s very ______ to our need for encouragement.
A.
sensitive
B.
creative
C.
attractive
D.
imaginative
【单选题】What is Julia's special technique when she is in need of support?
A.
She would ask her Daddy for some money.
B.
She would complain about her friend for not giving her special time.
C.
She would come to Daddy and ask for special time.
D.
She would come to her friends and play with them.
【单选题】关于重力加速度，下列说法正确的是（）
A.
在地球表面的任何地点，重力加速度都是相同的
B.
在地球表面的同一地点，重力加速度总是相同的
C.
重力加速度的方向总是指向地球的中心
D.
同一个物体，放在赤道附近质量小，放到纬度高的地点质量大
【单选题】--- I’ve passed the driving test! --- ______
A.
Well done!
B.
I am afraid not.
C.
That will do!
D.
I’m glad to.
【单选题】听力原文：M: I wonder if you can help me. W: I'd be glad to. M: I've just arrived and I'm not used to the time difference here. I don't want to be a late sleeper because I like to take a walk in the early ...
A.
Have a rest.
B.
Take a walk.
C.
Have a drink.
D.
Get to sleep.
【单选题】听力原文：M: I wonder if you can help me. W: I'd be glad to. M: I've just arrived and I'm not used to the time difference here. I don't want to be a late sleeper because I like to take a walk in the early ...
A.
Have a rest.
B.
Take a walk.
C.
Have a drink.
D.
Get to sleep.
【单选题】听力原文：M: I wonder if you can help me. W: I'd be glad to. M: I've just arrived and I'm not used to the time difference here. I don't want to be a late sleeper be cause I like to take a walk in the early...
A.
Have a rest.
B.
Take a walk.
C.
Have a drink.
D.
Get to sleep.
【简答题】对象模型，也称为要素模型，将研究的整个地理空间看作是一个空域，地理对象或实体作为独立的对象分布在空域中，按照其空间特征分为 、体４种基本对象，每个对象对应着一组相关的属性以区分各个不同的对象。（提示：三种对象，用顿号（、）隔开）
【单选题】关于自由落体运动的加速度，下列说法中正确的是（）
A.
重的物体下落的加速度大
B.
重力加速度在地球赤道比在地球北极大
C.
同一地点，一切物体自由下落的加速度都相同
D.
有空气阻力时物体下落比真空中下落慢，说明自由落体加速度与空气阻力有关
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