流行性脑脊髓膜炎与其他化脓性脑膜炎较大临床鉴别意义的是()
A.流行季节、年龄
B.脑膜刺激征
C.脑脊液改变
D.皮肤淤点、淤斑
E.以上均不是
参考答案:D
根据句意及首字母提示填空。
1. That T-shirt is too short. I want this l________ one.
2. —Do you want these blue p________ ?
—No, I don't.
3. These socks are very cheap. They're only two d________ .
4. The rainbow has seven c________ .I really like it.
在一定条件下,下列转化不能由一步反应实现的是( )
A.CuSO4→FeSO4
B.Ca(OH)2-→CaCO3
C.C→Na2CO3
D.Na2CO3→NaOH