A.2ng/ml
B.4ng/ml
C.6ng/ml
D.8ng/ml
E.l0ng/ml
| So long as teachers fail to distinguish
between teaching and learning, they will continue to undertake to do for
children that which only children can do for themselves. Teaching children to
read is not passing reading on to them. It is certainly not endless hours spent
in activities about reading. Douglas insists that "reading cannot be taught
directly and schools should stop trying to do the impossible." Teaching and learning are two entirely different processes. They differ in kind and function. The function of teaching is to create the conditions and the climate that will make it possible for children to devise the most efficient system for teaching themselves to read. Teaching is also a public activity: It can be seen and observed. Learning to read involves all that each individual does to make sense of the world of printed language. Almost all A. teachers should do as little as possible in helping students learn to read B. teachers should encourage students to read as widely as possible C. reading ability is something acquired rather than taught D. reading is more complicated than generally believed [单选题]探伤仪扫描发生器是用来（ ）。
A.产生水平基线 B.触发脉冲发生器工作 C.控制脉冲发射次数 D.抑制杂波 [填空题] In the past, the Park Service focused on making the big scenic parks more 【21】 and comfortable for tourists. Roads were paved to allow "windshield visitors" to experience the grandeur of nature without leaving their cars, and a 【22】 number of hotels and grocery stores were permitted to open 【23】 the park boundaries.
Now this trend is changing. Plans have been made to 【24】 the parks to their natural condition as much as possible. The objective of such a move would be to secure the preservation of the parks for future generations, 【25】 allowing present-day visitors to experience pure wilderness, 【26】 from any obvious signs of civilization ― an opportunity which is quickly disappearing in the twentieth century. 【27】 plans call only 【28】 a reduction in the number of cars 【29】 into the parks each day, but 【30】 , tourists may have to leave their cars at the gates and then dither visit the park on foot 【31】 use park 【32】 . 【33】 , stores and hotels may no longer be allowed within park
A. A．Exceptionally B．Additionally C．Increasingly D．Extraordinarily [单选题]存档的工作票应以（ ）的工作票为准，能够完整反映现场工作的原始信息记录。
A.现场确认 B.前期沟通 C.现场实际使用 D.后期修改 [单选题]电流互感器励磁曲线试验电压不能超过(____)kV。
A.1 B.2 C.3 D.5 [单选题]标准化设计中，远方跳闸保护宜采用（ ）经就地判别方式 。
A.二取一 B.二取二 C.一取一
A.A B.B C.C [多选题]广播系统具备以下哪些显示功能。（）
A.A、车次号显示 B.B、目的地显示 C.C、动态地图显示 D.D、多媒体视频显示 [填空题] 220kV输电线路跨越铁路（ ）的距离为（ ）。
[判断题]从安全生产来看，危险源是可能造成人员伤害、疾病、财产损失、作业环境破坏或其他损失的根源。
A.正确 B.错误 [判断题]居民委员会和村民委员会是我国的基层政权组织。
A.正确 B.错误 我来回答: 提交
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