下列关于队列的叙述中正确的是A) 在队列中只能插入数据 B) 在队列中只能删除数据C

患儿，女性，5岁，因右下肢跛行3年而入院。患儿2岁方学会走路，当时被发现右下肢行走不稳，升降步态，无外伤史。体检：体温36.5℃，右下肢无红肿、无压痛，下肢肌力正常，皮肤感觉正常，右髋关节屈伸正常，外展稍受限，其余关节活动正常。

关于先天性髋关节部位（CDH）的病理变化，下述哪些是正确的（）

A.髋臼比正常深

B.关节盂软骨的后上方向外翻出

C.髋臼窝内有纤维脂肪组织和增厚的圆韧带

D.在婴儿期股骨头的外形变成圆锥形

E.股骨颈明显缩短

F.双侧脱位时，骨盆向后倾斜，导致腰椎前凸变小

G.关节囊逐渐被牵伸一椭圆形一葫芦形

H.内收肌、绳肌、股薄肌、缝匠肌、阔筋膜张肌、股直肌和耻骨肌均被拉长

I.髂腰肌挛缩

J.髂腰肌向外移位，压于关节囊的峡口

根据句意及首字母提示完成单词。

1. The e_______ has a long nose. It can carry heavy things.

2. K_______ come from Australia. They like to live in the trees. They have big ears but no tails.

3. You can see g_______ in the zoo. They have very long necks (颈).

4. T_______ are the kings of the animals.

5. P_______ live only in China. They are very lovely and eat bambooes. They are white and black.

6. He's very I_______ because he never does his homework at school.

7. She didn't speak loudly because she was so s_______.

8. A_______ are our good friends. We should be friendly to them.

9. She is a very f_______ person. 10. Do you like the u_______ toy bear?

如图所示，一个斜面固定在水平面上，从斜面顶端以不同初速度v₀水平抛出小物体，得到物体在空中运动时间t与初速度v₀的关系如下表，g取10m/s²，试求：

（1）v₀=2m/s时平抛水平位移S；

（2）斜面的高度h；

（3）斜面的倾角θ。

评析颜元“真学”“实学”“习行”教育思想。

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