There is no light in the room.I think he ( ) in. A、should not beB、mustn't have beenC、mustn't beD、can’t be
There is no light in the room.I think he ( ) in.
A、should not be
B、mustn't have been
C、mustn't be
D、can’t be
相关考题：
She spent all night ______ about the future that lay ahead of her. (A) thinking(B) think(C) to(D) thought
1．I ______they ______tomorrow．A． think; won’ t comeB． don- t think ; comeC． don't think; will comeD． think; come
阅读下列说明和C++代码，回答问题，将解答填入答题纸的对应栏内。【说明】某灯具厂商欲生产一个灯具遥控器，该遥控器具有7个可编程的插槽，每个插槽都有开关按钮，对应着一个不同的灯。利用该遥控器能够统一控制房间中该厂商所有品牌灯具的开关，现采用Command(命令)模式实现该遥控器的软件部分。Command模式的类图如下图所示。【C++代码】class Light {public: Light(stringname) { /* 代码省略 */ } void on() {/* 代码省略 */ } // 开灯 void off() {/* 代码省略 */ } // 关灯};class Command {public: （1） ;}；class LightOnCommand:public Command { // 开灯命令private: Light* light;public: LightOnCommand(Light* light) { this->light=light; } voidexecute() { （2） ; }};class LightOffCommand:public Command { // 关灯命令private: Light *light;public: LightOffCommand(Light* light) { this->light=light; } voidexecute() { （3） ; }};class RemoteControl{ // 遥控器private: Command*onCommands[7]; Command*offCommands[7];public: RemoteControl() { /* 代码省略*/ } voidsetCommand(int slot, Command* onCommand, Command* offCommand) { （4） =onCommand; （5） =offCommand; } voidonButtonWasPushed(int slot) { （6） ; } voidoffButtonWasPushed(int slot) { （7） ; }};int main() { RemoteControl* remoteControl=new RemoteControl(); Light*livingRoomLight=new Light("Living Room"); Light*kitchenLight=new Light("kitchen"); LightOnCommand*livingRoomLightOn=newLightOnCommand(livingRoomLight); LightOffCommand* livingRoomLightOff=newLightOffCommand(livingRoomLight); LightOnCommand*kitchenLightOn=new LightOnCommand(kitchenLight); LightOffCommand* kitchenLightOff=new LightOffCommand(kitchenLight); remoteControl->setCommand(0, livingRoomLightOn, livingRoomLightOff); remoteControl->setCommand(1,kitchenLightOn, kitchenLightOff); remoteControl->onButtonWasPushed(0); remoteControl->offButtonWasPushed(0); remoteControl->onButtonWasPushed(1); remoteControl->offButtonWasPushed(1); /* 其余代码省略 */ return 0;}
__________A.feelingB.senseC.realizeD.think