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问题 选择题
如图所示，固定在水平桌面上的光滑金属杆cdeg处于方向竖直向下的匀强磁场中，金属杆ab接触良好，在端点de之间连接一电阻R，其他部分电阻不计．现用水平向右的力F作用在ab杆上，使金属杆从静止开始做匀加速运动，则能定性表示力F与时间t的关系及线框中感应电流的瞬时功率与位移X的关系的是（以向右为正方向）（   ）

A．

B．

C．

D．

答案

BC

阅读理解

C
A. You and Me, Baby
 
 
Reading level: Baby-Grade 1
Hardcover: 40 pages
Language: English
List Price: $15.95
Price: $12.44 & eligible for FREE Super Saver Shipping on orders over $25. You Save: $3.51 (22%)
Availability: In Stock. Ships from and sold by Amazon.com. Gift-wrap available.
Only 4 left in stock--order soon (more on the way). Want it delivered Thursday, September 27.
 
B. Ruff! Ruff! Where's Scruff?
 
 
Reading level: Baby-Preschool
Hardcover: 16 pages
Language: English
Price: $11.16 & eligible for FREE Super Saver Shipping on orders over $25.
Availability: In Stock. Sold by Amazon.com. Gift-wrap available.
Want it delivered Thursday, September 2.
Book Description: It’s bath time for Scruff. But does anyone know where he’s hiding? Have the cows seen him? Moo-no! How about the pigs? Oink-no! Looking for that dog is just too tough! But not for toddlers. If they look carefully, they’ll find Scruff hiding on every pop-up page!
 
C. The Giving Tree
 
 
Reading level: Ages 4-8
Hardcover: 64 pages
Language: English
Price: $11.55
Availability: Sold all year round and choose One-Day Shipping at checkout.
Book Description: Once there was a tree...and she loved a little boy. Every day the boy would come to the tree to eat her apples, swing from her branches, or slide down her trunk...and the tree was happy.
 
D. Where the Wild Things Are
 
 
Reading level: Ages 6-10
Hardcover Comic: 62 pages
Language: English
List Price: $16.95
Price: $11.53 & eligible for FREE Super Saver Shipping on orders over $25.
You Save: $5.42 (32%)
Availability: In Stock. Ships from and sold by Amazon.com. Gift-wrap available. Want it delivered Thursday, September 12. Order it at once, and choose One-Day Shipping at checkout.
 
64. Little Tom who likes to read picture books with a hide-and-seek adventure will be likely to buy _____.
A. Ruff! Ruff! Where’s Scruff?           B. You and Me, Baby    
C. The Giving Tree                     D. Where the Wild Things Are
65. How much will you pay if you order three books named Where the Wild Things Are?
A. $16.26                        B$ 75                        C. $ 50.58              D. $34.59
66. Which of the following is not true according to the passage?
A. The language of four kinds of books is English.
B. Four kinds of books are available at present.
C. The cover of four kinds of books is hardcover.
D. The reading level of four kinds of books are the same.
67. Where would this advertisement probably appear?
A. In a children’s story-book           B. On the front page of a newspaper.
C. On the Internet.                     D. In a popular magazine..  
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单项选择题

七情影响脏腑气机，喜则

A．气上
B．气下
C．气结
D．气缓
E．气消
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