试题与答案

一质量为M=1.2kg的物块静止在水平桌面上,一质量为m=0.02kg的子弹以水

题型:填空题

题目:

一质量为M=1.2kg的物块静止在水平桌面上,一质量为m=0.02kg的子弹以水平速度v0=100m/s射入物块,在很短的时间内以水平速度10m/s穿出。则子弹穿越木块过程中,子弹和木块组成的系统的动量___________(填“守恒”或“不守恒”),子弹穿出时木块获得的水平初速度为________m/s。

答案:

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题型:阅读理解

阅读理解

     I had a summer camp with my classmates last year.

     Early in the morning, we gathered at the bus station. After saying goodbye to our parents, we got on the bus. ①It

took us more than two hours to arrive at the campground. 

     We got off the bus cheerfully, laughing and shouting; we jumped and ran all over the place. It was the first time for

us to be away from the parents. Some of us started to feel homesick(想家). However, when the night party and dances

began, the homesick was gone.

     The next day,②everybody rushed to the boating class, hoping to be at the head of the others. At first, my friends

and I worked hard but the boat wouldn't listen to us and kept going round and round. Then the teacher taught us how

to work together. After many tries, we did much better.

     Swimming class was my favorite. It was about the hottest time of a day and the best time to stay in the cool water.

The swimming teacher was a funny man, and during the class he often made us laugh happily.

     During the week I learned a lot of new things and made many new friends. I also learned how to take care of myself.

1. 将第①处改为带有spend的同义句 。

    ___________________________________

2. 将第②句翻译为汉语。

    ___________________________________

3. Why swimming class was the writer's favorite?

A. Because it was good to stay in the cool water when the weather was hot.

B. Because the swimming teacher was interesting.

C. Because the writer felt quite relaxed during the class.

D. All of the above.

4. Which statement is NOT true?

A. The children were happy to be away from Dad and Mum.

B. Their homesickness lasted for long.

C. Rowing boats is a kind of teamwork.

D. They camped for a week.

5. Which is the best title for the passage?

A. I Learnt a lot.

B. Boating and Swimming.

C. On the Campground.

D. My Summer Camp.

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题型:单项选择题 共用题干题

患者女性,12岁,因“多饮多尿3个月,反复恶心、欲呕2个月,加重伴头痛3天”入院。3个月前出现多饮、多尿,夜尿增多,24小时尿量最高达4000ml;2个月前患儿反复出现恶心、欲呕,晨起明显,3天前头痛加重,伴喷射性呕吐2次。查体:体温36℃,心率98次/分,呼吸20次/分,血压90/57mmHg(1mmHg=0.133kPa)。意识清楚,语利,双侧瞳孔等大等圆,右眼视野颞侧偏盲,伸舌居中。四肢肌力、肌张力正常,感觉无明显减退,病理征阴性。颅脑CT:鞍上占位,脑积水。甲胎蛋白2.5μg/L,人绒毛膜促性腺激素6.3U/L。

为明确诊断,可采取的简便、实用,较安全的方法是()

A.开颅手术切除

B.立体定向穿刺活检

C.脑脊液细胞学检查

D.诊断性放疗

E.PET-CT

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