判断题：集装箱托运，每一批必须是同一吨位的集装箱，至少按一箱托运。

题型：计算题

一质量为m的小球，以初速度v₀沿水平方向射出，恰好垂直地射到一倾角为30°的固定斜面上，并立即反方向弹回。已知反弹速度的大小是入射速度大小的，求在碰撞中斜面对小球的冲量大小。

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题型：阅读理解

阅读理解。

Dear Joy,

How are you? Are you still coming to my birthday party in July? My family, friends and classmates are all

coming. The party is on Saturday, July 2nd at around 6 : 30. It's at Uncle Paolo's restaurant in the city. First,

we can eat and talk from 6 : 30 to about 7 : 45. After that we can go to a concert in Central Park near History

Museum. Every Saturday night, there's a free concert at 8 : 00. I hope you can come. You can meet my other

friends and my sisters, too.

Write soon!

Emily

1. What is Emily talking about in her letter?

A. Joy's birthday party.

B. Emily's birthday party.

C. Uncle Paolo's birthday party?

2. Where are they going to have the party?

A. In Central Park.

B. Near History Museum.

C. At Uncle Paolo's restaurant.

3. What can they do from 6 : 30 to 7 : 45?They can .

A. go to a concert

B. eat and talk

C. go to the museum

4. What time does the party start?It starts at about .

A. 6 : 30

B. 7 : 45

C. 8 : 00

5. Are Emily's friends and classmates all coming?

A. Yes, they do

B. No, they don't

C. Yes, they are

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题型：多项选择题

患儿男，1岁6个月，因间断咳嗽1周就诊，每日呕吐1～2次胃内容物。患儿是第一胎足月顺产儿，生后母乳喂养至今，未添加辅食。平时易患"肺炎、肠炎"。查体：精神萎靡，营养差，体重5.9kg，身长75cm，前囟已闭，心肺（﹣），皮肤弹性差，皮下脂肪消失，四肢肌张力低下，活动尚可，神志尚清。

此患儿不会出现的现象是（）

A.糖代谢失常，发生低血糖

B.脂肪代谢失常，出现高胆固醇血症

C.伴发维生素A缺乏症

D.特异性免疫功能低下

E.肾浓缩功能降低

F.反复感染

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题型：单项选择题

牙科陶瓷中强度最高的陶瓷材料是

A．长石瓷

B．氧化铝瓷

C．氧化锫瓷

D．微晶玻璃

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题型：问答题简答题

回转机构的日常维护，重点检查哪些部位？

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集装箱托运，每一批必须是同一吨位的集装箱，至少按一箱托运。

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