为了比较水和食用油的吸热能力，小明用两个相同的装置做了如下图所示的实验。实验数据记录

The Basics of Math—Made Clear

Basic Math introduces students to the basic concepts of mathematics, as well as the fundamentals of more tricky areas. These 30 fantastic lectures are designed to provide students with an understanding of arithmetic and to prepare them for Algebra(代数) and beyond.

The lessons in Basic Math cover every basic aspect of arithmetic. They also look into exponents(指数), the order of operations, and square roots. In addition to learning how to perform various mathematical operations, students discover why these operations work, how a particular mathematical topic relates to other branches of mathematics, and how these operations can be used practically.

Basic Math starts from the relatively easier concepts and gradually moves on to the more troublesome ones, so as to allow for steady and sure understanding of the material by students. The lectures offer students the chance to “make sense” of mathematical knowledge that may have seemed so frightening. They also help students prepare for college mathematics and overcome their anxiety about this amazing—and completely understandable—field of study.

By the conclusion of the course, students will have improved their understanding of basic math. They will be able to clear away the mystery(神秘性) of mathematics and face their studies with more confidence than they ever imagined. In addition, they will strengthen their ability to accept new and exciting mathematical challenges.

Professor H. Siegel, honored by Kentucky Educational Television as “the best math teacher in America,” is a devoted teacher and has a gift for explaining mathematical concepts in ways that make them seem clear and obvious. From the basic concrete ideas to the more abstract problems, he is master in making math lectures learner-friendlier and less scary.

With a PhD in Mathematics Education from Georgia State University, Dr. Siegel teaches mathematics at Central Arizona College. His courses include various make-up classes and a number of lectures for future primary school teachers.

If the course fails to provide complete satisfaction to you, you can easily exchange it for any other course that we offer. Or you can get your money back.

小题1:What does the course Basic Math mainly cover?

A．Algebra.

B．College Mathematics.

C．Arithmetic.

D．Mathematics Education.小题2:What benefits can students expect from Basic Math?

A．Stronger imaginative ability.

B．Additional presentation skills.

C．More mathematical confidence.

D．Greater chances of becoming teachers.小题3:What can we learn about Professor H. Siegel?

A．He is a guest lecturer at Kentucky Educational Television.

B．He is to deliver 30 lectures in Basic Math.

C．He works in Georgia State University.

D．He specializes in training teachers.小题4:Where is the passage most likely to have been taken from?

A．A news report.

B．A book review

C．A lesson plan.

D．An advertisement

监护

在利用分层总和法计算地基沉降量确定地基沉降计算深度时，对于一般土采用的应力比是( )。

A．附加应力:自重应力=1:2

B．附加应力:自重应力=0.1:0.2

C．附加应力:自重应力=2:1

D．附加应力:自重应力=0.2:1

患儿男，11个月，因“泄泻2周”来诊。起病时每日泻10多次，经治疗大减，但近日仍日行3～4次，大便稀溏色淡，每于食后作泻，神疲倦怠，舌质淡，苔薄白。

小儿脾虚泄泻的治法是（）

A.疏风散寒，化湿和中

B.清肠解热，化湿止泻

C.健脾益气，酸甘敛阴

D.温补脾肾，固涩止泻

E.健脾益气，助运止泻

下面哪一种不是β衰变的类型（）

A.β－衰变

B.韧致辐射

C.β＋衰变

D.轨道电子俘获