脑脊液白细胞数明显升高多见于( )
A．病毒性脑膜炎B．脑瘤C．脑出血D．结核性脑膜炎E．化脓性脑膜炎
参考答案：E
请根据句意或括号中的中文提示、英文释义，写出句中所缺单词，使句子通顺。
1. After the meal something went wrong with the children's _________( 胃).
2. I can talk to my friend about anything, because she can keep s________ .
3. My English teacher always ______ a smile on her face and looks happy.
4. Exercising more is good for your_______( 健康).
5. The girl _________ (get)many greeting cards for her 15th birthday last year.
下列说法错误的是
A．自然界中存在碳元素的单质，也存在硅元素的单质
B．燃烧煤时加入适量的石灰石，可减少废气中二氧化硫的量
C．利用丁达尔现象可以区分FeCl3溶液与Fe（OH）3胶体
D．用焦炭在电炉中还原二氧化硅可得到含有少量杂质的粗硅
