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(1)甲实验的目的是探究钢球动能的大小与 的关系;实验时,它是通过观察 ,从而判断钢球动能的大小。
(2)进行乙实验时,每一次都让同一小车从斜面上相同的高度由静止滑下,其目的是使小车在水平面运动的起始 相同;通过观察小车在粗糙程度不同的水平面上运动 来判断小车在不同的水平面受到 的大小.从而可以推理:如果运动的物体不受力,它将 。 查看习题详情和答案>>
在初学英语的学生当中,有很多人对怎样学好英语感到迷茫,通过这两节课的学习,你是怎样做的?你能为他们提供一些好的建议吗? 试试看吧,你至少要提6条建议噢!
1.You should always speak English in class.
查看习题详情和答案>>情景对话,选择下列各句对应的答语.
(1) Hello! Are you Li Lei?
[ ]
(2) What grade are you in?
[ ]
(3) Thanks very much.
[ ]
(4) What's in the boxes?
[ ]
(5) How many students are there?
[ ]
A.You're welcome.
B.Some books.
C.There are forty.
D. Yes, I am.
E.I'm in Grade One.
查看习题详情和答案>>把李华和他母亲在电话中的对话改写成一篇短文。
要求:
①意思连贯,语句通顺;
②不得用直接引语;
③词数80左右。
(L
Li Hua; M
Mother)
L: Hello! This is Li Hua speaking. Who is that speaking?
M: Hello! This is Mum speaking. What are you doing now?
L: I'm doing my homework.
M: I see.
L: Where are you now, Mum?
M: I'm at the hospital. A workmate of mine has fallen ill. And she's still having a high fever.
L: Sorry to hear that.
M: So I will have to stay here a bit longer to look after her, and I'll come home late, I'm afraid.
L: Shall I wait for you?
M: No, you needn't. Go to bed soon after you have your lessons.
L: All right. Anything else, Mum?
M: Nothing more. Goodbye, my dear.
L: Goodbye, Mum.
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