某钢结构厂房，在结构吊装工程的一次质量检查中，发现漏焊现象严重，为找出造成漏焊的最主

药物按零级动力学消除是指

A．吸收与代谢平衡
B．单位时间内消除恒定比例的药物
C．单位时间内消除恒定量的药物
D．血浆浓度达到稳定水平
E．药物完全消除

社会分层是社会不平等的体现，它之所以在各个时代、各个社会中普遍存在，是因为社会运行过程的需要。这是哪个学派的观点？（）

A.功能主义

B.结构主义

C.马克思主义

D.后现代主义

（1）在做《验证力的平行四边行定则》实验中：除了方木板、白纸、图钉、细线套、铅笔、刻度尺和三角板外，还需要的器材有：______．在此实验中，假如F₁的大小及方向固定不变，那么为了使橡皮条仍然伸长到O点，对F₂来说，下面几种说法中正确的是______

A．F₂可以有多个方向

B．F₂的方向和大小可以有多个值

C．F₂的方向和大小是惟一确定值

D．F₂的方向是惟一的，但大小可有多个值

（2）在《测定金属电阻率》的实验中，某同学连接电路如图所示，闭合开关后，发现电路有故障（已知电源、电表和导线均完好，电源电动势为E）：

  ①若电流表示数为零、电压表示数为E，则发生故障的是______（选填“待测金属丝”“滑动变阻器”

或“开关”）．

②若电流表、电压表示数均为零，该同学利用多用电表检查故障．先将选择开关旋至“直流电压10V”档，再将______（填“红”或“黑”）表笔固定在a接线柱，把另一支表笔依次接b、c、d接线柱．若只有滑动变阻器断路，则多用电表的示数依次

是______、______、______．

阅读理解。

     When most people think of giant pandas, the pictures of the cute, black-and-white bears from China that

eat bamboo will immediately jump into their mind. Scientists from Mississippi State University, however, are

interested in what the bears leave behind; their poop (排泄物). At a recent meeting in Denver, Professor Brown

at the university presented her research showing how panda poop could inspire a new way to obtain energy

from plants, which are a renewable energy source. Usually, plants can be called biomass (有机燃料) when

they are used as an energy source.

     Burning biomass is one way to capture its energy, but Brown hopes panda poop can teach scientists

something about breaking down biomass. Pandas - or at least the bacteria in their stomachs - are very good at

getting energy out of bamboo. Unlike cows, which use 4 stomachs to digest large amounts of grass, a panda

has only one stomach. Bamboo comes in, and poop goes out.

     Every day for 14 months, Brown and her team on this project, counted the bacteria in the poop of the two

pandas. Ya Ya and Le Le living at the Memphis Zoo. Her studies turned up 12 species of bacteria that break

down biomass, including one that had never been found in pandas. Brown says that because the poop contains

bacteria that break down biomass, it could also be used to break down other types of biomass.

     Now the scientists hope to identify the chemicals that help with the process of breaking down biomass and

then figure out how the bacteria work. If those chemicals can be made in the lab, they could be used to turn

biomass - like grass or other plants - into fuel.

     Brown says she doesn't mind handling panda poop."It's probably the most pleasant material to work with,"

she says,"My colleagues and I have been working with other poop for a long time, and we can assure you it

has a fairly pleasant smell associated with it."

1. The importance of studying panda poop is _______.

A. to explore a new way to get energy from plants

B. to create a renewable energy from plants

C. to learn a lesson of energy from panda poop

D. to figure out how the bacteria work for us mankind

2. The process of the panda poop project can be described as ______.

a. Identify the chemicals helpful to break down biomass.

b. Find the bacteria in panda poop which break down bamboo.

c. Reproduce the chemicals in the lab to turn biomass into energy.

d. Analyze how the bacteria in panda poop work in panda's stomach.

A. a, b, d, e

B. a, d, c, b

C. b, d, a, c

D. b, a, d, c

3. What does the author mainly want to express in the 2nd paragraph?

A. Pandas don't digest bamboo the same way as cows.

B. Pandas are capable of getting energy using stomachs.

C. Scientists have learn something new from panda poop.

D. Pandas can get energy from bamboo more efficiently.

4. What does Professor Brown think of working with panda poop?

A. Enjoyable.

B. Challenging.

C. Inspiring.

D. Sick.

下列各项，具有"泌别清浊"功能的是（）

A.三焦

B.大肠

C.小肠

D.膀胱

E.心包