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【简答题】
在“观察水的沸腾”实验中，当水温升到90℃时，小明开始计时，每隔1min记录一次水的温度。实验数据如下表所示。 （1）请根据上表数据描点画出水沸腾过程中温度随时间变化的图像。 （2）由图象可以看出，把90℃加热到刚开始沸腾所需时间为 min。 （3）根据图象可以推断，如果在其它条件不变的情况 下，沸腾后继续对水加热1min，则水的温度是 ℃ （4）实验中水的沸点是 ℃，这是因为气压 一个标准大气压
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【简答题】Mark was walking home from school one day when he noticed that the boy ahead of him had tripped and dropped all the books he was carrying, along with two sweaters, a baseball bat, a glove and a small ...
【单选题】What did the woman's parents do in Central America?
A.
Travel around the area.
B.
Volunteer their services.
C.
Teach in some schools.
D.
Visit relatives in the area.
【单选题】What did the author's mother suggest as the right way for the Chinese to respond at the dinner table in America?
A.
They should say indirectly whether they want to have anything or not, rather than directly refuse or accept it.
B.
They should say directly whether they want to have anything or not, rather than refuse for the sake of politeness even if they in fact want to eat it.
C.
They should take whatever they want to eat, and beat around the bush to ask the host to prepare more dishes so that they can pack up and take away.
【单选题】What did the womans parents do in Central America?
A.
To travel around the area.
B.
To volunteer their services.
C.
To teach in some schools.
D.
To visit relatives in the area.
【单选题】He noticed that the straight part of the dance was different in the afternoon from _______ it had been in the morning. （2006年宜昌市模拟题）
A.
that
B.
where
C.
what
D.
which
【单选题】He noticed that the straight part of the dance was different in the afternoon from ________ it had been in the morning.
A.
that
B.
where
C.
what
D.
which
【单选题】What did the author decide to do to test if anyone still can rely on the kindness of strangers in America?
A.
journey across America on his own without any money
B.
interview a lot of his fellow Americans
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