下面程序
main()
int x=100,a=10,b=20,ok1=5,ok2=0；
if(a＜b)
if(b!=15)
if(!ok1) x=1：
else if(ok2)x=10；
x=-1；
printf("%d\n",x)；
的输出是______。
A) -1
B) 0
C) 1
D) 不确定的值
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带电量分别为+4Q和-6Q的两个相同的金属小球，相距一定距离时，相互作用力的大小为F。若把它们接触一下后，再放回原处，它们的相互作用力的大小变为[ ]
A．F/24
B．F/16
C．F/8
D．F/4
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
People often say you never get a second chance to make a first impression, and that's actually quite true. 小题1: After all, making a good first impression is all about making others feel good when spending time with them．The following tips will help you make a positive impression every time．
● Dress appropriately
小题2: That means dressing up or putting on nice, clean, situation-appropriate clothes for social situations．It isn't difficult and it doesn't have to cost you much, either．
● Be aware of your body language
Words express very little of what you say．Body language can tell someone a lot about your mood and confidence level． 小题3: Eye contact is an easy way to make others feel comfortable, important and special．Nervous body language can make others uncomfortable and anxious．Try to be aware of your body language when communicating with others．
● Respect the opinions of others
Not everyone will have the same opinion with you, and friendly disagreements can be a gateway to a great conversation. Respect other people's right to have their own opinion．Respect the opinions of others even if you disagree with them． 小题4:
● 小题5:
People love talking about themselves, but generally, you want to be careful of taking over the conversation．By listening carefully to what others are saying, you are not only making them feel important, but you can gather cues you need to keep the conversation going and bridge to new topics．
A．Be a careful listener.
B．Show an interest in every person you meet.
C．Smile especially when first meeting someone.
D．Make sure you look nice whenever you meet someone new.E．Meeting new people and starting conversations is often challenging.
F．Others will want to be with you and help you make a good impression.
G．Don't force others to believe what you believe or to see things only as you see them.
患者，男，69岁，左侧肢体无力2个月入院，临床诊断脑血栓形成恢复期。查体：患者神志清楚，左侧肢体偏瘫，Brunnstrom分期Ⅳ期，目前康复治疗正确的是（）
A.主要是正确的抗痉挛体位摆放，预防并发症和继发性损害
B.主要是控制下肢肌痉挛，早日恢复患者步行功能
C.控制肌痉挛和异常运动模式，促进分离运动的出现
D.控制肌痉挛，促进选择性运动和速度运动更好的恢复
E.提高左侧肢体肌张力，诱发主动运动
同业拆借业务主要通过全国银行间同业拆借市场进行。()
旅行支票的作废有不含以下情况（）。
A、旅行支票初签错误
B、旅行支票发行机构要求销毁旅行支票库存
C、库存保管不当造成旅行支票破损、霉烂等
D、旅行支票金额较大