某场地的地质条件如图所示，试计算并在图示坐标中分别画出地下水下降前及下降后土中自重应

I love music. I learned to play the guitar at 11 and I wrote my first song four years later. My dream -----to become a country singer.

After years of hard work, a record company was showing interest in me. One day during a trip to mountains, a friend gave me a bit of meth, a kind of drugs(毒品). I smoked it. And that was all that I thought about for the next year and a half. I couldn’t live without it.

When the police came to me, I looked like death. The first seven days in prison(监狱), I just slept. When I woke up on the eighth day, I had never known such shame and guilt(罪恶感). I walked down the hall to the pay phone. My mama is the best person on the earth, and I knew this was going to break her heart. When I heard her voice on the phone, I told her where I was. She just said, “Son, no matter what you did, I love you forever(永远).

Her words gave me the confidence to face my trouble(麻烦). And I also realized(意识到) this was my chance to start a new life.

When people hear my words, I hope they will not make the same mistake(错误) as I have, but I know that you can overcome(克服) almost anything, especially smoking drug. That’s why I share my story here.

小题1:The writer wrote his first song when he was ____ years old.

A．11

B．13

C．15

D．17小题2:Why was the writer put into prison?

A．Because he offered others meth.

B．Because he took drugs.

C．Because he refused the company.

D．Because he didn’t pay for his phone.小题3:Which is right according to ( 根据 ) the passage?

A．He will start a new life.

B．He gave his friends a bit of meth.

C．His father helped him a lot.

D．He goes on smoking drug.

水平抛出的小球，t秒末的速度方向与水平方向的夹角为θ₁，t+t₀秒末速度方向与水平方向的夹角为θ₂，忽略空气阻力，则小球初速度的大小为 （　　）

A．gt₀（cosθ₁-cosθ₂）

B．

C．gt₀（tanθ₁-tanθ₂）

D．

下列各项中哪项最能代表产程进展情况（）。

A.胎心率

B.宫颈口扩张与胎头下降

C.子宫收缩的强度与频率

D.是否破膜

E.胎位

患者，男性，30岁，慢性肾衰竭。入院查体：患者四肢肌无力，肠胀气，心律不整，患者可能发生的情况是

A．高血钾
B．低血钾
C．低血磷
D．代谢性酸中毒
E．营养不良

零件上不可以作为基准的是（）。

A、对称面

B、球心

C、对称线

D、角度