设集合A到B的映射为f:x→y=2x+1,则集合B中的元素0与A中对应的元素是_

题型:填空题

问题:

设集合A到B的映射为f:x→y=2x+1,则集合B中的元素0与A中对应的元素是______.

考点:函数、映射的概念
题型:填空题

阅读下面短文,根据短文内容判断句子的正误。正确(T)错误(F)。

“If I had one million yuan, I would buy you a palace! Do I have one million yuan? No, I don’t ! So I can only spend ten fen on this short message, sending you my best wishes!”

Today, SMS——Short Message Service is popular, and China Mobile says that every second, there are 410 messages being sent.

Look around you! People are watching their mobiles, smiling or laughing. Thumbs(拇指 ) are moving quickly on mobiles, bringing happiness to their friends. Through SMS, we know the weather report, share jokes and news, express love and friendship.

SMS is becoming more and more popular. It is reported that 67% of young people like to send short messages to greet each other. Internet SMS will be more helpful to people. I am thankful for the progress because SMS save me much money. Just on the top end of a thumb, so much joy can be found!

小题1:One short message only costs ten fen.

小题2:SMS can help people spend more time on traveling.

小题3:Few young people like to send short messages to greet each other.

小题4:The writer thinks that he will buy a palace for his friend.

小题5:The passage is mainly about the joy of SMS.

题型:填空题

Our school is ______ children ______ 5-12.

A.in; for

B.for; in

C.of; for

D.for; of

题型:填空题

氯丙嗪抗精神病的作用机制主要是

A.阻断中枢多巴胺受体
B.激动中枢M胆碱受体
C.抑制脑干网状结构上行激活系统
D.阻断中枢5-HT受体
E.阻断中枢α肾上腺素受体

题型:填空题

滴定管读数时,应双手持管,保持与地面垂直。

题型:填空题

下列心血管疾病中哪种最易咯血

A.动脉导管未闭

B.室间隔缺损

C.房间隔缺损

D.高血压

E.风湿性心脏病二尖瓣狭窄

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