30. What does the underlined sentence mean?

A. A blizzard blew across the country over the next few years.

B. A heavy wind blew across the country over the next few years.

C. Much wind blew across the country over the next few years.

D. The new meaning of blizzard was widely used across the country over the next few years.

31. In the last paragraph the author tries to .

A. explain the difference between snow and blizzard.

B. tell us too much snow is a real problem

C. make us understand the meaning of "snow" better

D. tell us why people like snow but blizzard

32. The text is mainly about .

A. a snowstorm in the northern United States

B. a blizzard in the northern United States

C. the new meaning of the word blizzard

D. a cold winter in the northern United States

　　　　　　　　　　　　　　　　　　　D

Dear parents and teachers,

Steve Spangler's new book "Naked Eggs and Flying Potatoes" is the best book of science experiments and information I've ever seen, and as an educator with over twenty years' experience, I've seen my share. Mr Spangler was himself a classroom teacher for several years, which gives him an insight （洞察力） that is missing in other books of this type. He knows how it is, with kids and limited time and resources.

Shawn Campbell's pictures make this book even more impressive. Just to look at the colorful examples and pictures will make anyone of any age want to try these experiments himself / herself.

Steve Spangler makes sure that we will learn the actual science behind each of his experiments, too. This book isn't just about having fun, blowing things up, and making messes, although those things certainly add to the impression. Yes, you and your kids will have fun, blow things up and make messes, but you will also understand why. Mr Spangler is a master teacher who knows how to communicate his love of science to kids, and his audiences and readers sense it and react with that same enthusiasm.

"Naked Eggs and Flying Potatoes" is the kind of book that belongs on every class- room's library shelf and every kid's bedroom bookcase. However, I seriously doubt that the book will stay on the shelf for long; once word gets out, every kid in the building will want to get his / her hands on it and start experimenting. It might even be a good idea to get a second copy to keep in the kitchen; many of the experiments use simple household things that are found in any pantry （食品储藏柜）.

My liking for and enthusiasm about this book are strong. It's really fantastic!

33. What can we learn about the book?

A. It was written by an educator with over twenty years' experience.

B. It is mainly about the science behind the experiments.

C. It is a serious book with no pictures in it.

D. It won't bring fun to kids.

34. By saying "I seriously doubt that the book will stay on the shelf for long", the writer means " ".