有生命的标志是物质具有______。

慢性肥厚性鼻炎需切除肥厚的下鼻甲粘膜时，切除范围不应超过下鼻甲的（）

A.1/2

B.1/3

C.2/3

D.1/4

E.没有规定

托盘天平横梁上都有标尺和游码，向右移动游码的作用相当于在天平的右盘中加小砝码，小明用天平测一块金属的质量时，使用了4个砝码，其中1个100g，1个50g，2个10g，游码在标尺上的位置如图所示，这个金属的质量是                   g 。

     It's 5: 00 in the morning when the alarm (闹钟) rings in my ears. I roll out of bed and walk blindly

through the dark into the bathroom. I turn on the light and put on my glasses. The house is still as I walk

downstairs while my husband and three kids sleep peacefully. Usually I go for a long run, but today I

choose my favorite exercise DVD,  Insanity.Sweat pours down my face and into my eyes. My heart

races as I force my body to finish each movement. As I near the end of the exercise,  I feel extremely

tired, but a smile is on my face. It's not a smile because the DVD is over, but a smile of success from

pushing my body to its extreme limit.

     Some people enjoy shopping, smoking, food, work, or even chocolate. But I need exercise to get

through each day. Some shake heads when they see me run through the town. Others get hurt when I

refuse to try just one bite of their grandmother's chocolate cake. They raise their eyebrows, surprised

by my "no thank you," or by my choice to have a salad. Over the years, I have learned it's okay to

just say "no." I shouldn't feel sorry for refusing food that I don't want to eat.

     So what drives me to roll out of bed at 5:00 a. m.? What gives me the reason to just say no to ice

cream? Commitment. A commitment to change my life with a way that reduces daily anxiety,  increases

selfconfidence and energy,  extends life and above all improves my body shape. This is the point where

a smile appears on my face as I look at myself in the mirror or try on my favorite pair of jeans that now

fit just right. It's through commitment and sweat that I can make a difference within myself inside and

out.

1. Why is there a smile on the author's face in the morning?

A. Because she sees her family sleeping peacefully.

B. Because she finishes her favorite exercise.

C. Because she enjoys the interesting DVD.

D. Because she feels a sense of achievement.

2. Which of the following is true according to Paragraph 2?

A. She doesn't treat others politely.

B. She likes to make others surprised.

C. Others don't understand what she does.

D. Others try to help her by offering her food.

3. What does the underlined word "commitment" in the last paragraph mean?

A. Good health.

B. Firm belief.

C. A strong power.

D. A regular habit.

4. What can we learn about the author from the text?

A. She acts in a strange way.

B. She wants to look different from others.

C. She aims to develop a good body shape.

D. She has difficulty getting along with others.

中国某公司拟与外国某公司共同投资设立一中外合资经营企业。双方约定，企业总投资额为1 200万美元，注册资本为520万美元。其中，中方出资360万美元，外方出资160万美元。各方出资自企业营业执照签发之日起6个月内一次缴清。中外双方这一约定，符合中外合资经营企业法律制度的规定。 ()

电压表的扩程是利用（）的原理。

A.串联电路

B.并联电路

C.混联电路

D.串并联