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【简答题】
One of our biggest fears nowadays is that our kids might some day get lost in a “sea of technology” rather than experiencing the natural world. Fear – producing TV and computer games are leading to a serious disconnect between kids and the great outdoors, which will change the wild places of the world, its creatures and human health for the worse, unless adults get working on child’s play. Each of us had a place in nature we go sometimes, even if it was torn down. We cannot be the last generation to have that place. At this rate, kids who miss the sense of wonder outdoors will not grow up to be protectors of natural landscapes. “If the decline in parks use continues across North America, who will defend parks against encroachment(蚕食)?” asks Richard Louv, author of Last Child in the Woods. Without having a nature experience, kids can turn out just fine, but they are missing out a huge enrichment of their lives. That applies to everything from their physical health and mental health, to stress levels, creativity and cognitive(认知的)skills. Experts predict modern kids will have poorer health than their parents—and they say a lack of outside play is surely part of it; research suggests that kids do better academically in schools with a nature component and that play in nature fosters(培养)leadership by the smartest, not by the toughest. Even a tiny outdoor experience can create wonder in a child. The three – year – old turning over his first rock realizes he is not alone in the world. A clump of trees on the roadside can be the whole universe in his eyes. We really need to value that more. Kids are not to blame. They are over – protected and frightened. It is dangerous out there from time to time, but repetitive stress from computers is replacing breaking an arm as a childhood rite(仪式)of passage. Everyone from developers to schools and outdoorsy citizens, should help regain for our kids some of the freedom and joy of exploring, taking friendship in fields and woods that cement(增强)love, respect and need for the landscape. As parents, we should devote some of our energies to taking our kids into nature. This could yet be our greatest cause. 小题1:. According to Paragraph 2, the writer thinks that_____. A.we are the last generation to experience nature. B.the author of Last Child in the Woods don’t defend parks against encroachment C.without having a nature experience, kids are missing out a huge enrichment of their lives D.children should grow up to be protectors of nature 小题2:. According to the passage, children without experiencing nature will . A.keep a high sense of wonder B.be over – protected by their parents C.be less healthy both physically and mentally D.change wild places and creatures for the better 小题3:. . According to the author, children’s breaking an arm is . A.the fault on the part of their parents B.the natural experience in their growing up C.the result of their own carelessness in play D.the effect of their re petitive stress from computers 小题4:. In writing this passage, the author mainly intends to . A. blame children for getting lost in computer games B. encourage children to protect parks from encroachment C. show his concern about children’s lack of experience in nature
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【单选题】选词填空。 太郎君は( )ですか。 ... 8 歳です。
A.
だれ
B.
何歳
C.
【判断题】宏程序段:X101=#2的含义是表示将变量#2中的数值赋值给#101的变量中。()
A.
正确
B.
错误
【单选题】电力系统中以KWh作为()
A.
电压
B.
电能
C.
电功率
【单选题】局部视图与斜视图的共同点是( )
A.
都表达完整机件的外部结构形状
B.
都要画波浪线
C.
都表达机件局部结构的外部形状
D.
都有固定位置
【多选题】电路如图所示,计算流过20Ω电阻的电流,可以采用哪种方法计算
A.
结点电压法
B.
叠加定理
C.
戴维宁定理
D.
网孔电流法
【单选题】斜视图与向视图的共同点是()。
A.
表示物体某方向的整体结构。
B.
表示物体么方向的局部结构。
C.
视图放置位置不同于基本视图。
D.
都不是向基本投影面投射。
【单选题】电路如图所示,经过20Ω电阻的电流I( )。
A.
-4A
B.
- 2A
C.
20A
D.
5A
【简答题】如图所示电路中, R 1 = 20 Ω,电路总电阻为 12 Ω,电流表示数为 0.3A ,请计算: (1)电源电压;(2)通过 R 2 的电流;(3)电阻 R 2 的阻值。
【简答题】如图所示电路中,R 1 =20Ω,电路总电阻为12Ω,电流表示数为0.3A,请计算: ⑴电源电压; ⑵电阻R 2 的阻值; ⑶通过R 2 的电流。
【简答题】简单LED手电筒电路中,电路如下图所示。LED的工作电压为1.8V,流过LED的工作电流为5-20mA 。试计算此电路需串接的电阻最大为 Ω,最小为 Ω。
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