【单选题】【消耗次数：1】
8051单片机的并行I/O接口可以做扩展地址总线的高8位输出接口。
①
P0
②
P1
③
P2
④
P3
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相关题目
【单选题】
8051单片机的并行I/O接口P3有第二功能，其中P3.7的第二功能是\*MERGEFORMAT,其作用是的读选通信号输出。
①
程序存储器
②
SFR
③
内部数据存储器
④
外部数据存储器
随机题目
【单选题】
Goats are being hired to do the work of people near San Diego. The fires that occurred in Hillborbough four years ago destroyed thirty homes, most of which have been rebuilt. While people were rebuilding the homes, the grasses and bushes were growing back. The area is now so overgrown in bushes that there is again a major danger of fire.The city government put up bids to remove the bushes. The lowest bid they received was $50,000—and that was if the city provided breakfast and lunch for the workers for the six weeks it would take to clear the overgrown area. The city only wanted to give unlimited coffee and a piece of bread a day for each person. When that offer was rejected, the city asked for help on its website.A sheepherder in Montanta and a goat-keeper in San Bernardino read about the city’s plight（困境）while surfing the Web. They both offered to do the job for $25,000. The city government chose the goat-keeper because he lived closer. When he was told that the city dump（垃圾场）was overflowing , the goat-keeper said, “No problem. My goats will eat everything in your dump, except the car engines, of course.” So, for another $5,000, the city killed two birds with one stone. If all goes well, they will invite the goat-keeper and his “family” back every three years. The goat-keeper said that he would probably visit San Diego while his goats were in the dump.What are the “two birds” that the city government kills with only one stone?
①
Both the sheepherder and goat-keeper will work for the city for $25,000.
②
The danger of fire and providing breakfast and lunch for the work crews.
③
The danger of fire and the overflowing dump.
④
The city government can save some money and the goat-keeper has a new job.
【单选题】
You have to work hard if you want to __________ in your courses.
①
achieve
②
succeed
③
win
④
beat
【单选题】
Susan: How do you do, Mrs. White.Mrs. White: How do you do, Susan. I’m glad you can join us. __________
①
Dont be shy.
②
Please feel natural.
③
Make yourself at home.
④
Feel all right here.
【单选题】
I ___________ a short rest before we continue the work.
①
produce
②
publish
③
propose
④
pull
【单选题】
Visitor: How do I get to the bank? I have no knowledge of this area. Policeman: Cross the road and turn left at the other side. __________ for about 100 meters and the bank is to your left.
①
Continue your walking
②
Keep going straight
③
Go along
④
Go on walking
【判断题】
答题说明：句子没有语法错误请选择“正确”，有语法错误请选择“错误”Jim wasnt a coward and he hated the Fascists deeply.
①
正确
②
错误
【判断题】
答题说明：句子没有语法错误请选择“正确”，有语法错误请选择“错误”Before Ford introduced the assembly line, each car was build by hand.
①
正确
②
错误
【判断题】
We are all worried about him with that, but he thinks nothing of it.划线部分应该翻译成“无法理解”
①
正确
②
错误