我国省级行政区的设立，始于（）A.尧舜时期的禅让制 B.西周的分封制 C.秦朝的郡县

·Basic Study Manual      Hardcover: $37

Future success depends on the ability to learn. Here are the answers to the questions most often asked by parents, teachers, business trainers and by students themselves. Read this book and learn:

▲ What the three barriers to study are — and what to do about them.

▲ What to do if you get tired of a subject you are studying.

▲ Twenty-six simple drills to help you to learn how to study easily, rapidly and with full understanding.

▲ Buy and read the Basic Study Manual and use it to dramatically improve your ability to study.

·Study Skills for Life    Hardcover: $32

L. Ron Hubbard’s study technology for teenagers opens the door to their future success by giving them the ability to study and learn. Fully illustrated （插图）for easy comprehension.

·Learning how to learn     Hardcover: $25

The basics of effective study for 8 to 12-year-olds, fully illustrated. Children who read and apply the materials in this book regain their liking for study and their ability to apply this knowledge in life. Get this book for a child you want to see win at his studies!

·How to Use a Dictionary Picture Book for Children   Hardcover: $36

In spite of billions of dollars spent on “educational research”, children are not taught the most basic skills of learning, even the most basic of these: how to use a dictionary. In fact, a search of educational books for children found not one that told them how to use a dictionary — or that one should. Written for children 8 to 12-year-olds, this fully illustrated book will teach your child:

▲ How to find words in a dictionary.

▲ The different ways that words are used.

▲ What the different marks and symbols that are used in a dictionary mean.

▲ How to use a dictionary to correctly pronounce words.

It includes a section for parents and teachers showing you how to use this book with children. Buy this book and give it to your children to unlock their education. What’s more, you’ll just pay 50% for it before May 1, 2011.

小题1:According to the advertisements, the four books are all intended for ______.

A．teachers

B．adults

C．children

D．women小题2:Some of the four books were illustrated in order to_________

A．make them suitable to different readers

B．persuade readers to buy them

C．reduce the cost of them

D．help readers understand them小题3:If you buy the four books on April 30, 2011, your will have to pay_______ for the four books.

A．$130

B．$65

C．$112

D．$18小题4:The purpose of the passage is to _______.

A．introduce some cheap books to readers

B．sell the four books to readers

C．enrich students’ knowledge about nature

D．help children to learn English

已知：3CH₄(g) + 2N₂(g)3C(s) + 4NH₃(g)  ΔH＞0，在700℃，CH₄与N₂在不同物质的量之比[n(CH₄)/n(N₂)]时CH₄的平衡转化率如下图所示：

下列说法正确的是

A．n(CH₄)/n(N₂)越大，CH₄的转化率越高

B．n(CH₄)/n(N₂)不变时，若升温，NH₃的体积分数会增大

C．b点对应的平衡常数比a点的大

D．a点对应的NH₃的体积分数约为26%

一位患者急诊入院，既往有胃溃疡病史，现腹部刀割样疼痛，呈板状腹型，该患的超声影像表现不包括（）。

A.腹腔内见游离气体

B.局部胃肠管壁增厚

C.胃内较大强光团，后伴声影，可移动

D.小网膜囊局限性积液

E.腹腔内局限性积液

生石灰烧伤后，以下哪种紧急处理方法最为妥当（）

A.大量清水冲洗

B.用酸性中和液冲洗

C.先去除表面石灰，再用大量清水冲洗

D.简单包扎后到专科医院治疗

E.立即涂抹烧伤药

造成雷达目标图像左右扩大的主要因素是（）。

A、垂直波束宽度

B、水平波束宽度

C、脉冲宽度

D、脉冲重复频率