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【单选题】
—I’m sorry for being late. I should have phoned you earlier. --_________. I’ve just arrived.A.
That’s no trouble
B.
You are welcome
C.
That’s all right
D.
You can never tell
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反馈参考答案：
举一反三
【多选题】IIC通信与USART、SPI相比,以下说法正确的是:
A.
IIC通信、USART的同步通信是半双工通信，SPI通信、USART的异步通信是全双工通信。
B.
IIC、USART、SPI通信都需要在通信线路上连接上拉电阻。
C.
由于IIC通信可以设置从机地址，主机发起和某从机的通信时只要呼叫从机地址，等待从机应答后即可建立通信链路。
D.
IIC、USART、SPI通信的波特率时钟都由发送数据的单片机发出。
E.
IIC通信与USART、SPI相比，通信距离最长。
F.
由于IIC通信与SPI共用了特殊功能寄存器及单片机引脚，因此不能同时启用IIC、SPI功能。
【简答题】We can make all the jokes we want about taking baths ourselves, but if we are ill in bed and can't get up, we'll be thankful to the nurses who help us get clean. While I am not a nurse, and have never...
【单选题】- What happened to the young trees we planted last week? - The trees _____ well, but I didn’t water them.
A.
might grow
B.
must have grown
C.
would have grown
D.
would grow
【单选题】剪力墙单洞口墙顶连梁再洞口外第一根箍筋距洞口边缘距离是( ) mm prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
50
B.
100
C.
150
D.
5d （ d 为箍筋直径）
【判断题】If we all speak the same language, we can communicate happily with each other.
A.
正确
B.
错误
【单选题】What can kids do to help the environment? I think we can _paper to save the trees.
A.
recycle
B.
waste
C.
make
D.
do
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