下列关于地球外部圈层的叙述，正确的是（） A.地球外部圈层包括岩石圈、水圈、生物圈和

Most American families are smaller than the families in other countries.

Children in the USA will  51 their parents’ home when they grow up. They usually live far from their parents because they often goo to different places to find good jobs. They often  52 to their parents or phone them, and they can choose their own  53.  Americans think it’s important for young people to make their own decisions.

Children are asked to do some house work at  54. In many families, children are paid for  55 the housework so that they can learn how to manage their own money.

小题1:A. leave    B. go    C. love

小题2:A. come    B. drive   C. write

小题3:A. jobs     B. job    C. works

小题4:A. playground   B. home   C. classroom

小题5:A. to do   B. do   C. doing

室外游乐设备，高度超过20m的游乐设施在风速大于（）时，必须停止运行。

患者男性，25岁，在京务工，主因"发热、咳嗽、咳痰4天"到门诊诊疗，在家未用任何药物。查体：右下肺实变体征，胸部X线示右肺大片浸润影，血气分析示pH7．36，PaO63mmHg，PaCO32mmHg

为取得致病菌，下列选项正确的是（）

A.清晨用清水漱口

B.留取第2口痰

C.痰液在1小时内送检

D.黏稠的痰液可用溶解剂溶解，再接种

E.以上全是

在Cisco路由器中，路由表信息中的C代表（）。

A.Dynamicroute

B.connected

C.CLNS

D.Directlyconnected