一学生欲从量筒中倒出部分液体。他先仰视凹液面最低处读出读数为50mL,倒出液体后

题型:选择题

问题:

一学生欲从量筒中倒出部分液体。他先仰视凹液面最低处读出读数为50mL,倒出液体后,他又俯视凹液面最低处读出读数为10mL,他实际倒出溶液体积(   )

A.40mL

B.>40mL

C.<40mL

D.无法判断

考点:测容器—量筒称量器—天平加热器皿—酒精灯常见仪器和装置的用途
题型:选择题

Most American families are smaller than the families in other countries.

Children in the USA will  51 their parents’ home when they grow up. They usually live far from their parents because they often goo to different places to find good jobs. They often  52 to their parents or phone them, and they can choose their own  53.  Americans think it’s important for young people to make their own decisions.

Children are asked to do some house work at  54. In many families, children are paid for  55 the housework so that they can learn how to manage their own money.

小题1:A. leave    B. go    C. love

小题2:A. come    B. drive   C. write

小题3:A. jobs     B. job    C. works

小题4:A. playground   B. home   C. classroom

小题5:A. to do   B. do   C. doing

题型:选择题

下列加点的成语使用错误的一项是(    )(2 分)

A.唐雎这种凛然不可侵犯的独立人格和自强的精神,在历史的长河中一直熠熠生辉

B.就冲着你三顾茅庐的这番情意,明天的宴会我是去定了。

C.妄自菲薄,能使我们认识到自己的不足,有助于我们取得更大的进步。

D.“为中华之崛起而读书” ,这是周恩来少年时就立下的鸿鹄之志

题型:选择题

在窗体上画一个名称为List1的列表框,一个名称为Label1的标签。列表框中显示若干国家的名称,当单击列表中的某个国家名时,在标签中显示选中国家的名称。下列正确实现上述功能的程序是( )。

A.Private Sub List1_Click()
Labe11. Camion=List1. ListIndex
End Sub

B.Private Sub List1_Click()
Labe11. Name=List1. ListIndex
End Sub

C.Private Sub List1_Click()
Labe11.Name=List1. Text
End Sub

D.Private Sub List1_Click()
Labe11. Caption=List1. Text
End Sub

题型:选择题

硅稳压管的稳压原理是(),电流在很大范围内变化,电压却可以基本维持不变。

A、二极管单向导通时

B、稳压二极管反向击穿时

C、三极管放大电路时

D、三极管放电时

题型:选择题

当母乳不足或母乳因故不能按时喂哺时,需加喂牛乳或其他代乳品的称()

A、母乳喂养

B、人工喂养

C、混合喂养

D、牛奶喂养

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