反复膝关节疼痛，伴关节屈伸受限，X线片关节腔内游离体嵌入。选择最佳的治疗方法为（）

根据短文内容，完成下列句子，每空词数不限。

     Soda is popular all over the world. People, especially young children, like drinking it very much because

it tastes good. Some of them drink at least one can or bottle every day. But drinking it not only costs too

much money, but also is bad for people's health in some ways. If you drink too much soda, you will probably

become too fat, have a toothache. Even if you don't mind your money, you must at least care about your health.

     Why is soda unhealthy? A study at a university has been made for years. It shows us how bad it is. First,

soda can lower your body's PH levels. Second, soda can raise insulin levels (胰岛素水平), lead to high blood

pressure (血压), heart disease, weight gain and so on. Do you want your teeth to stop falling out? Stop

drinking soda! Do you want your bones (骨骼) to get harder? Stop drinking soda! Do you want to improve

your immune system (免疫系统)? Stop drinking soda! Do you want to lose weight? Stop drinking soda!

     But what should you drink instead? Water is good for your health. Drinking tea is a good idea, too. Anyhow, you should stop drinking soda from now on.

1. Drinking soda not only costs too much money, but also _______ people's health in some ways.

2. A study made at a university for years shows us _______.

3. Soda can lower our body's PH levels, _______ insulin levels, _______ high blood pressure, heart disease,

    weight gain and so on.

4. The writer advises us to drink _______ instead of soda.

5. The writer mainly asks us to _______.

一辆汽车在路口处等信号灯，绿灯亮起，司机立即启动汽车，汽车以a=2m/s²的加速度开始加速．已知道路的最高限速为v=20m/s．求：

（1）汽车加速到最高限速所需要的时间t；

（2）汽车在6s内通过的位移大小x．

函数定义为Fun(int &

A．，一个变量定义为int i=0；，则下面调用中正确的是( )。A) Fun(10)

B．Fun(10+i)

C．Fun(&n)

D．Fun(n)

引发个体产生心理应激反应最直接的因素是()

A．生理刺激

B．心理刺激

C．个体主观对各种刺激的认识

D．身体疾病

E．社会文化刺激

超限列车的运行经路中，超限车辆的任何部位与建筑物或设备之间的距离在（）mm及其以下时，应限速运行。

A.100

B.150

C.200

D.201