有个大学物理系学生 (135) 这个问题困扰了很 (136) :“为什

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问题:

有个大学物理系学生 (135) 这个问题困扰了很 (136) :“为什么烧水时水壶发出的声音逐渐 (137) 大,但是到了水快煮沸时声音却: (138) 低了 (139) ?”结果,他从亚当斯那里得到了 (140) 。声音是因为上升的气泡到达较冷的水时便会破裂而 (141) 的,等到壶里所有水的 (142) 都相等之后,声音便会 (143)

A.厚度

B.深度

C.湿度

D.热度

考点:汉语水平考试(HSK)初中等汉语水平考试(HSK)初中等
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操作站的菜单、工具条和键盘的自定义文件后缀名为()。

题型:单项选择题

从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。()

A.

B.

C.

D.

题型:单项选择题

根据对话情景和内容,从对话后的选项中选出能入空白处的最佳选项。选项中有两项为多余选项。

E

We’ve all got a lot going on in our lives. Some things are fun, some aren’t. I think I’ m a fairly positive person. 1   In fact, being positive means different things to different people. 2  

Focus on what you have not what you don’t. It’s impossible for one to have all the nice things in the world. Focus on what you already have. This can create feelings of happiness.

3  If you can express thanks for everything you have, you leave little room for bad thoughts. It’s a great practice. When you focus on what really matters, so many worries go away.

Forget the past and don’t cling to(紧紧抓住) the future:  4  If you cannot forget mistakes and missed opportunities from the past, you probably find you blame yourself all the time. Clinging to the future is a bad one, too. It truly may never happen. So pay more attention to the present .

 5  It always makes me wonder what people are saying about me if they speak so ill of someone else when they aren’t around. If you don’t do this, you never have to worry about what you’ve said getting back to someone.  

A. Be grateful.

B.Here are a few key ways to being positive that have really helped me.

C.Speak about others as if they were in front of you.

D.The past will never come again.E.Being positive doesn’t mean smiling a fake smile all the time.

F.The past has happened and the future may never come.

G.Have fun and hug yourself.

题型:单项选择题

在乳腺癌和前列腺癌常见。患者对化疗或放疗有较好的治疗反应,治疗后6个月内临床上有改善,但骨显像似有恶化的表现(最明显在治疗后3个月),称之为()。

A."彩点肋"

B."热髌骨征"

C."炸面圈"样改变

D."闪耀"现象

E.超级影像

题型:单项选择题

要求:分条作答,简明扼要,不超过300字。

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