短期目标可分为（）。 A.日目标 B.周目标 C.月目标 D.年目标

60周年金银纪念币从本质上说是 [ ]

A．商品　　　

B．价值符号　　

C．货币　　　　

D．一般等价物　　

—I don’t know the new word.

—It doesn’t matter, you can ________ in the dictionary.

A. look up it                B. look it up            C. look for it

已知点（3，1）和（-4，6）在直线3x-2y-a=0的两侧，则a的取值范围是[ ]

A．a＜-24或a＞7

B．a=7或24

C．-7＜a＜24

D．-24＜a＜7

用词、短语或句子补全对话。

A: 1._______?

B: I have bread and milk for breakfast.

A: Do you eat eggs?

B: Yes  , I do.

A: Well. 2. _______?

B: Two eggs.

A: I know,  3. _______?

B: I drink milk every day.

A: 4._______?

B: Not very much.  But my father 5._______ me to drink it, he says milk

    6. _______ my health. 7._______?

A: Cola is my favorite drink.

B: I think drinking too much cola is 8._______ your health. Cola is junk food, so try to drink less.

A: OK, I will.  

图像未发现扫描层面外病灶，原因是（）

A.密度分辨率高

B.空间分辨率高

C.无层面外结构干扰

D.灰阶范围小

E.矩阵大