Constructivism are based on the idea that, unlike a computer disk or an empty container, students do not wait passively to be filled up with knowledge. Rather, students actively build, or construct, their own knowledge.Teachers cannot entirely control their students’ learning, expert teachers can do much to facilitate students’ own active learning processes

Ⅰ. Introduction and theory The modern computer has revolutionized the way we live. Not surprisingly, the computer has also changed the way we do biochemical research. Your first encounter with a computer in this laboratory will probably be while using an instrument that has a computer to control its operation, to collect data, and to analyze data. All major pieces of scientific equipment including UV-VIS spectrometers, high-performance liquid chromatographs

I. Listening Comprehension (20 point) Section One Directions: In this section, you will hear three short talks. At the end of each talk, you will hear some questions. Both the talks and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then

Distillation : Summary Distillation is a widely used separation process. The separation is based on the volatility difference of the components to be separated

1. Historical background: The Victorian age can be roughly divided into three periods: (1) 1832-1848: a time of social unrest; (2) 1848-1870: a period of economic prosperity and religious controversy; (3) 1870-1901: a period of decay of Victorian values

The last decade has seen a revolution in software engineering tools and techniques. This revolution has been fueled by the ever-increasing complexity of the software component of delivered systems. Although the software component of delivered systems may not be the most expensive component, it is usually, however, “in series” with the hardware component; if the software doesn’t work, the hardware is useless

Concept A protective reflex that can be controlledconsciously Remove excessive secretion & foreignmaterial from the airway Initiated by miscellaneous stimuli or byvoluntary exertion. The most common respiratory symptom

Often in multiple-effect evaporators the concentration of the liquid being evaporated changes drastically from effect to effect, especially in the latter effects. In such cases, this phenomenon can be used to advantage by staging one or more of the latter effects. Staging is the operation of an effect by maintaining

Copyright 8 1997 by Noyes Publications No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without permission in writing from the Publisher. Library of Congress Catalog Card Number: 96-29055 Printed in the United States

1. The molecule structure of IF （1) 10nm filament showing a similar spatial pattern asMT, to which they may be connected