【单选题】血胸患者胸穿液涂片检查时,下列哪项比值提示血胸并发感染?
【简答题】在1:1 000 000的地图上量得两地的距离是2.5 cm,用科学记数法表示这两地的实际距离为( )m.
【单选题】One billion is ________ in British English.
【判断题】类体中private修饰的变量在本类中能访问,类生成的对象也能访问。
【单选题】According to Vasillis Stergios, ______
A.
the demonstration went unnoticed
B.
the demonstration may escalate to real social upheavals
C.
there will be bomb threats after the demonstration
D.
the situation will get better and better