B 2.D 3.C 4.b a 查看更多

 

题目列表(包括答案和解析)

a、(1)如图1所示,纽扣的直径是
1.10
1.10
cm.
(2)如图2所示,温度计的示数是
-13
-13
℃.
(3)用天平测量盐水的密度:将盛有适量盐水的杯子放在调节好的天平左盘内,测出杯子和盐水的总质量为128.6g.然后将杯中盐水的一部分倒入量筒中,如图甲所示,再将盛有剩余盐水的杯子放在天平左盘内,改变砝码的个数和游码的位置,使天平横梁再次在水平位置平衡,此时右盘中砝码质量和游码在标尺上的位置如图乙所示,则杯子及杯内剩余盐水的总质量为
62.6
62.6
g,根据上述实验数据计算盐水的密度为
1.1×103
1.1×103
kg/m3
b.小丽在水平桌面上用薄透明玻璃板和两支完全相同的蜡烛A、B,探究平面镜成像的特点.在实验中小丽视线正对薄透明玻璃板,看到蜡烛A的“像”,马上把蜡烛B放在所看到“像”的位置,并在白纸上记录实验情况如图4所示.其中MN是玻璃板的位置,a是点燃的蜡烛A所在位置,b是蜡烛B所在位置.小丽根据实验记录发现“像与物体到镜面的距离不相等”.出现这种现象的原因是
AB
AB
(多选).
A、薄透明玻璃板与水平桌面不垂直
B、找像时没有从多个方向观察  
C、实验过程中没有使用平面镜 
D、实验过程中没有点燃蜡烛B

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A metaphor is a poetic device that deals with comparison. It compares similar qualities of two dissimilar objects. With a simple metaphor, one object becomes the other: Love is a rose. Although this does not sound like a particularly rich image, a metaphor can communicate so much about a particular image that poets use them more than any other type of figurative language(修辞). The reason for this is that poets compose their poetry to express what they are experiencing emotionally at that moment. Consequently, what the poet imagines love to be may or may not be love we see it. Therefore, the poet’s job is to enable us to experience it, to feel it the same way as the poet does.
Let’s analyze this remarkably unsophisticated metaphor concerning love and the rose to see what it offers. Because the poet uses a comparison with a rose, first we must examine the characteristics of that flower. A rose is spectacular in its beauty; its petals(花瓣) are nicely soft, and its smell is pleasing. It’s possible to say that a rose is actually a feast to the senses of sight, touch, and smell. The rose’s appearance seems to border on(近似于)perfection, each petal seemingly symmetrical(对称的) in form. Isn’t this the way one’s love should be? A loved one should be a delight to one’s senses and seem perfect. However, there is another dimension added to the comparison by using a rose. Roses have thorns(刺). The poet wants to convey the idea that roses can be tricky(机警的). So can love, the metaphor tells us. When one reaches out with absolute trust to touch the object of his or her affection, ouch, a thorn can cause great harm! “Be careful,” the metaphor warns: Love is a feast to the senses, but it can overwhelm us, and it can also hurt us and cause acute suffering. This is the poet’s perception of love--a warning. What is the point? Just this: It took almost 14 sentences to clarify what a simple metaphor communicates in only four words! That is the artistry and the joy of the simple metaphor.
【小题1】According to the passage, what is a metaphor?
A.A comparison between two different objects with similar features.
B.A contrast between two different things to create a vivid image.
C.A description of two similar objects in a poetic way.
D.A literary device specially employed in poetry writing.
【小题2】 The main idea of this passage is that         .
A.rose is a good image in poetryB.love is sweet and pleasing
C.metaphor is ambiguousD.metaphor is great poetic device
【小题3】 It can be inferred from the passage that a metaphor is        .
A.difficult to understandB.rich in meaningC.not precise enoughD.like a flower
【小题4】 As is meant by the author, thorns of a rose_________.
A.protect the rose from harmB.symbolize reduced love
C.add a new element to the image of loveD.represent objects of one’s affection
【小题5】 The meaning of the love-is–a-rose metaphor is that____________-
A.love is a true joyB.true love comes once in a lifetime
C.love does not last long D.love is both good and bad experiences

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a、(1)如图1所示,纽扣的直径是______cm.
(2)如图2所示,温度计的示数是______℃.
(3)用天平测量盐水的密度:将盛有适量盐水的杯子放在调节好的天平左盘内,测出杯子和盐水的总质量为128.6g.然后将杯中盐水的一部分倒入量筒中,如图甲所示,再将盛有剩余盐水的杯子放在天平左盘内,改变砝码的个数和游码的位置,使天平横梁再次在水平位置平衡,此时右盘中砝码质量和游码在标尺上的位置如图乙所示,则杯子及杯内剩余盐水的总质量为______g,根据上述实验数据计算盐水的密度为______kg/m3
b.小丽在水平桌面上用薄透明玻璃板和两支完全相同的蜡烛A、B,探究平面镜成像的特点.在实验中小丽视线正对薄透明玻璃板,看到蜡烛A的“像”,马上把蜡烛B放在所看到“像”的位置,并在白纸上记录实验情况如图4所示.其中MN是玻璃板的位置,a是点燃的蜡烛A所在位置,b是蜡烛B所在位置.小丽根据实验记录发现“像与物体到镜面的距离不相等”.出现这种现象的原因是______(多选).
A、薄透明玻璃板与水平桌面不垂直
B、找像时没有从多个方向观察 
C、实验过程中没有使用平面镜
D、实验过程中没有点燃蜡烛B

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a、(1)如图1所示,纽扣的直径是    cm.
(2)如图2所示,温度计的示数是    ℃.
(3)用天平测量盐水的密度:将盛有适量盐水的杯子放在调节好的天平左盘内,测出杯子和盐水的总质量为128.6g.然后将杯中盐水的一部分倒入量筒中,如图甲所示,再将盛有剩余盐水的杯子放在天平左盘内,改变砝码的个数和游码的位置,使天平横梁再次在水平位置平衡,此时右盘中砝码质量和游码在标尺上的位置如图乙所示,则杯子及杯内剩余盐水的总质量为    g,根据上述实验数据计算盐水的密度为    kg/m3
b.小丽在水平桌面上用薄透明玻璃板和两支完全相同的蜡烛A、B,探究平面镜成像的特点.在实验中小丽视线正对薄透明玻璃板,看到蜡烛A的“像”,马上把蜡烛B放在所看到“像”的位置,并在白纸上记录实验情况如图4所示.其中MN是玻璃板的位置,a是点燃的蜡烛A所在位置,b是蜡烛B所在位置.小丽根据实验记录发现“像与物体到镜面的距离不相等”.出现这种现象的原因是    (多选).
A、薄透明玻璃板与水平桌面不垂直
B、找像时没有从多个方向观察  
C、实验过程中没有使用平面镜 
D、实验过程中没有点燃蜡烛B

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(4分)在探究“杠杆的平衡条件”的实验中,有甲、乙两位同学作出了如下的猜想:

甲同学:

乙同学:动力×动力臂=阻力×阻力臂。    为了验证以上两种猜想是否正确,两位同学采用了如图所示的实验装置来进行实验和收集证据,并设计了如下的实验方案:

A.按如图所示的装置安装实验器材。

B.在没有挂钩码时,将杠杆调节至水平位置平衡。

c.将钩码(每个钩码的质量均为50g)分别挂在杠杆的两边并移动其悬挂的位置,重新将杠杆调节至水平位置平衡。

D.改变悬挂的钩码个数,并移动其悬挂的位置,使杠杆又在水平位置平衡。

    并将每次实验测得的数据都记录在下表中,那么:

    (1)在记录数据的表格中,根据实验装置

右边的放大图补充漏掉的两空(g=10N/kg)。

    (2)在实验中,当杠杆处于水平位置平

衡时,杠杆的重心在图中的_______点。

    (3)综上所述,由此可得出的结论是:

F1l1=_______ (填写字母)。

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