下列在规定税额基础上减征30%的资源品目有( )。 A．锰矿石 B．铬矿石 C．铝

Yesterday, I entered the website “ Topic for today”, I feel ____1____ (interest) in the report on middle school students’ using cellphones on campus. In fact, many students now come to school ____2____ cellphones. My schoolmates have different opinions. Some think ____3___it is convenient to get in touch with others with the cellphone, which also ____4____(let) you feel safe especially in time of trouble. Besides, it is nice to enjoy various functions of different cellphones. ____5____ think differently. First, the cellphone is not a must in school, as ___6_____ are some IC phones in the school _____7___(make) it easy to call others. Second, many students often play e-games and send e-messages with their cellphones, even in class, ___8____ will surely have bad effects on their study. What’s more, it will result in a great waste of time. In my opinion, the cellphone is _____9___ useful tool in our daily life. But it doesn’t mean we can use it ____10____(free) in school.

关于新生儿期的保健原则，下述观念正确的是（）。

A.合理喂养

B.保暖

C.预防感染

D.培养良好的睡眠习惯

E.做好脐带、皮肤等日常护理

假定建立了一个名为Command1的命令按钮数组，则以下说法中错误的是______。

A．数组中每个命令按钮的名称（Name属性）均为Command1

B．数组中每个命令按钮的标题（Caption属性）都一样

C．数组中所有命令按钮可以使用同一个事件过程

D．用名称Command1(下标)可以访问数组中的每个命令按钮

正常肾上腺的MRI信号与肝实质信号强度相比（）

A.T₁及T₂加权像均为等信号

B.T₁加权像低信号、T₂加权像高信号

C.T₁加权像高信号、T₂加权像低信号

D.T₁及T₂加权像均为高信号

E.T₁及T₂加权像均为低信号

发动机排量是发动机（），一般用升（L）表示。

A、各气缸工作容积的总和

B、气缸工作容积

C、各气缸燃烧室容积的总和

D、燃烧室容积