问题 填空题

小明在表演二胡时,用弓拉动琴弦发声,二胡的声音是通过______传播到我们耳中的。为了保证工作和学习,声音不能超过70______。

答案

空气、dB(分贝)

小明用弓拉琴弦时,琴弦振动发声,声音通过空气传播,最终传播到我们的中;为了保证工作和学习,声音不能超过70dB。

选择题
阅读理解

Book 1 Elixir    written by Eric Walters

Twelve-year-old Roth becomes a friend of Dr. Banting and his assistant, Mr. Best, who are doing research on a cure for diabetes (糖尿病). She finds herself torn between her sympathy for the animals being experimented on and her friendship with Banting and Best.

Book 2  George Washington Carver   written by Elizabeth Macleod

Meet the “Peanut(花生)Specialist”, George Washington Carver, the inventor and professor who made over 325 products out of peanuts. Through his agricultural research, he also greatly improved the lives of countless black farmers in the southern United States. See also Macleod’s Albert Einstein: A Life of Genius.

Book 3 The Inuit Thought of It: Amazing Arctic Innovations

 written by Alootook Ipellie & David MacDonald

Explore more than 40 ideas necessary to Inuit survival. From ideas familiar to us today to inventive concepts that shaped their lives, celebrate the creativity of a remarkably intelligent people. Also see other books: The Chinese Thought of It by Tingxing Ye and A Native American Thought of It by Rocky Landon and David MacDonald.

Book 4  Made in Canada: 101 Amazing Achievements   written by Bev Spencer 

What things do we use daily that have a Canadian connection? Here are 101 common things that were invented in Canada or by a Canadian, including the Blackberry, alkaline(碱性) batteries and the Blue Box recycling program. 

Book 5 Newton and the Time Machine    written by Michael McGowan

Ten-year-old boy Newton has invented a time machine to see dinosaurs up close. But it disappears on a test run with his two huge friends, King Herbert and Queen Certrude, can he save them before time runs out? 

小题1:Which of the following best describes Roth’s feeling in Book 1?

A.Painful.

B.Curious.

C.Frightened.

D.Disappointed.小题2:Which of the following is TRUE according to the passage?

A.Animals are mentioned in Book 1 and Book 5.

B.Book 3 introduces 40 inventive concepts.

C.Alkaline batteries were invented by Dr. Banting.

D.George Washington Carver was a black farmer in the US.小题3: In Book 5, King Herbert and Queen Gertrude are________.

A.Newton’s human friends

B.the names of the time machine

C.two dinosaurs

D.the inventions of the time machine小题4:If you are interested in native Americans, you may read the book by ________.

A.Elizabeth Macleod

B.Eric Walters

C.Rocky London & David MacDonald

D.Bev Spencer