老师做了一个物理小实验让学生观察:如图所示,一轻质横杆两侧各固定一金属环,横杆可

题型:选择题

问题:

老师做了一个物理小实验让学生观察:如图所示,一轻质横杆两侧各固定一金属环,横杆可绕中心点自由转动,老师拿一条形磁铁插向其中一个小环,后又取出插向另一个小环,同学们看到的现象是(   )

A.磁铁插向左环,横杆发生转动

B.磁铁插向右环,横杆发生转动

C.无论磁铁插向左环还是右环,横杆都不发生转动

D.无论磁铁插向左环还是右环,横杆都发生转动

考点:楞次定律
题型:选择题

扩展名为mpr的文件是

A.菜单文件

B.菜单程序文件

C.菜单备注文件

D.菜单参数文件

题型:选择题

第一节:完形填空

My friend Gayle has been "living" with cancer for four years and it is progressively getting worse. One day Gayle   1        that one of her childhood wishes was to have a red Radio Flyer bicycle. As a child she never received one because she believed that if you told your birthday wish it wouldn't   2          .

I was at an ice cream stand one day and in the window was a miniature (微型的) red Radio Flyer bicycle that could be won in a    3     drawing (抽奖). For each ice cream you could fill out a ticket for a chance to win. After several weeks and many ice creams, I didn't win. I got up the courage to ask the person    4        if I could buy one. T 'went to the window and as I began   5       , I could feel my throat    6      and my eyes overflowed with tears. However I managed to tell him the story, and after writing a    7      I left carrying it.

The bicycle was    8      the next day, and Gayle's dream came true. The following day I received a letter that read:

Dear Bonnie,

Once in a while there is an opportunity to pass on a    9        I lost my parents to cancer six months ago. I cared for both of them but could not have done it without the love and generosity of friends - friends who   10       .

The best to you,

Norma

It was from the owner of the ice cream stand. Enclosed was my uncashed check.

(  ) 1. A. expressed                     B. whispered                 C. told                  D. ordered

(  ) 2. A. realize                         B. appear                      C. happen             D. come true

(  ) 3. A. daily                           B. weekly                     C. monthly            D. yearly

(  ) 4. A. in the charge                B. in charge                  C. in office            D. in public

(  ) 5. A. to say                          B. to tell                       C. to weep             D. to speak

(  ) 6. A. tighten                        B. loosen                      C. dry                   D. wet

(  ) 7. A. name                           B. check                       C. notice               D. note

(  ) 8. A. bought                        B. came                        C. ridden               D. delivered

(  ) 9. A. hand                           B. check                       C. kindness            D. bicycle

(  ) 10. A. care                           B. treasure                    C. value                D. promise

题型:选择题

* * 寄生虫感染最常见的是()

A.溶组织变形虫

B. * * 毛滴虫

C.丝虫

D.鞭虫

E.蓝氏贾第鞭毛虫

题型:选择题

采购物品到厂后,应由哪个部门进行点收()

A.采购

B.仓管

C.品保

D.工程

题型:选择题

流量计中,()宜测量粘度不高的轻质油类和腐蚀性不大的酸碱溶液流量。

A.转子流量计

B.椭圆齿轮流量计

C.涡轮流量计

D.靶氏流量计

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