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【简答题】
某学习小组的同学们在做“探究水的沸腾”实验时，对水加热了很长时间后沸腾；他们记录的数据如下表所示： (1)从数据上看，本次实验中水沸腾的温度为_______℃； (2)请你根据记录数据，在图中画出水的温度和时间关系的曲线； (3)实验中发现，开始加热到沸腾的这段时间过长，造成这种现象的原因可能是___________（给出一种原因即可）。
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【单选题】Brand Geely Panda Volvo S40 Tiguan BMW m1 Buick Regal Price 45,000 358,000 320,000 1,200,000 210,000 Made in China Sweden China Germany China Features cute; small; suitable for young ladies safe; larg...
A.
Tiguan
B.
Buick Regal
C.
Volvo S40
【多选题】(Watch the video 00:00-05:45)In the introduction stage,theteacher set up a real situationto guide students to solve problemsby depictingthe route from the school to the provincial museum. What are the...
A.
It can a rouse students' curiosity to solve problems .
B.
It can s timulate students' content schema .
C.
It can p ave the way for the later tasks , i.e., mark ing the map and talking about the route after listening。
D.
It can pave way for sharing ideas in groups and later presenting ideas in class.
【简答题】试判断下列函数的可微性和解析性： (1)f(z)=xy2+ix2y； (2)f(z)=x2+iy2； (3)f(z)=2x3+3iy3； (4)f(z)=x2一3xy2+i(3x2y—y3)．
【判断题】According the previous introduction of BEC-Preliminary Test, There are 45 questions in each part of the test.
A.
正确
B.
错误
【单选题】(Watch the video 00:00-05:45)In the introduction, the teacher wrote several phrases on the blackboard. What could be the possible reasons for the teacher to do so?
A.
She may want to help students solv e problems.
B.
She may want to introduce language .
C.
She may want to do b rainstorming with students.
D.
She may want to help students better u nderstand the problem .
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