淮南师范学院一共有（）栋教学楼，分别是A、B、C、D、E楼。
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3---4岁幼儿认真听并能听懂常用语言的具体目标是（）和（）。
变压器绝缘材料损坏后气体颜色为（）。
A. 白色；
B. 淡灰色；
C. 黑色；
D. 无色。
The most important information to be obtained from a barometer is the（）.
A. difference between the reading of the two pointers，which shows wind direction
B. last two figures of the reading of the pointer，such as 87，76，or 92
C. present reading of the pressure，combined with the changes in pressure observed in the recent past
D. weather indications printed on the dial (such as cold，wet，etc.) under the pointer
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