试题与答案

美容化妆品是什么?

题型:问答题 简答题

题目:

美容化妆品是什么?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A, B

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题型:选择题

如图,在水平桌面上放置两条相距l的平行光滑导轨ab与cd,阻值为R的电阻与导轨的a、c端相连。滑杆MN垂直于导轨并可在导轨上滑动。整个装置放于匀强磁场中,磁场的方向竖直向上,磁感应强度的大小为B。滑杆的中点系一不可伸长的轻绳,绳绕过固定在桌边的光滑轻滑轮后,与一质量为m的物块相连,绳处于拉直状态。现若从静止开始释放物块,用i表示回路中的感应电流,g表示重力加速度,则在物块下落过程中物块的速度可能            (  )

A.    B.

C.                            D.

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题型:完形填空
Nowadays, we have tons of high-tech gadgets to help us keep connected to our friends and family. Many of us have cellphones to ___16__ calls and write text messages; the Internet to chat with friends and __17__ e-mails. But being in touch with your friends and family also means __18__ in touch with some strangers. We often get spam(网上垃圾邮件) in our inbox, calls from strangers, and messages from __19__ people. So what should we __20__ with all of these?
__21__ you might want to answer the call from an unknown number, or respond to the message from someone you don’t know, try __22__. You are not sure __23__ they are contacting you, and it could be ill-spirited. It is __24__ not to respond to calls or messages from numbers that you are not familiar __25__. The same rule applies to (应用于) e-mails. There are many people who create viruses that __26__ harm your computer, and these viruses are disguised(假装) as e-mails. __27__ opening these e-mails, you are risking getting a virus __28__ could destroy your computer.
In other words, all the new technology is great for keeping in touch, but also comes with some bad things. __29__ yourself out of trouble, it is best to __30__ from messages and calls that you don’t know.
小题1:
A.makeB.doC.receiveD.ring
小题2:
A.writeB.sendC.answer D.read
小题3:
A.to be B.being C.be D.are
小题4:
A.known B.well-known C.unknown D.better-known
小题5:
A.manage B.compare C.deal D.do
小题6:
A.But B.Since C.Because D.Although
小题7:
A.not B.not doing C.not to doD.not to
小题8:
A.that B.what C.why D.how
小题9:
A.most dangerous B.safest C.necessary D.valuable
小题10:
A.by B.with C.at D.into
小题11:
A.should B.couldC.would D.need
小题12:
A.In B.By C.With D.At
小题13:
A.thatB.whatC.if D.whether
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A.To keepB.Keep C.Keeping D.Kept
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题型:问答题

由吃小包装食品所想到的

小宇和晓丽周末到崂山的“九水十八潭”游玩.该吃午饭了,他俩从背包中取出事先购置的各种小包装食品,准备饱餐一顿.小宇拿了一包塑料包装的牛肉干,晓丽拿了一包塑料包装的薯片.

晓丽正吃得津津有味,可小宇还在费劲地撕着包装袋呢!小宇不解地说:“你力气比我还大?!这么容易就将包装袋撕开了?”晓丽也奇怪地看了看这包牛肉干,明白了.她对小宇说:“你看,我这包薯片的包装袋上有一个三角形的缺口,你的没有.”

他俩又检查了其它小食品的包装袋,发现有的是半圆形的缺口,有的是直线形(裂缝形)的缺口…

物理课堂培养出的探究意识,促使他俩针对这一现象提出了一个物理探究课题…

请你也像他俩那样针对上述现象提出一个探究课题,并完成如下的探究报告:

(1)探究课题:______

(2)猜想:______

(3)设计实验方案:

实验器材:______

实验步骤:______

实验记录表格:

(4)预测实验:

如果猜想正确,将会出现的现象是:______

(5)饱餐一顿后,小宇又拿出一袋瓜子,尽管包装袋上没有缺口,但也较容易地将包装袋撕开了.他仔细一看,发现包装袋是牛皮纸做的.针对这一现象,请你提出一个探究课题:______.

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