已知三个数1、2、2,请你添加一个数,使他们构成一个比例式,则这个数可能是___

题型:填空题

问题:

已知三个数1、2、
2
,请你添加一个数,使他们构成一个比例式,则这个数可能是______.(写出所有可能的数)
考点:比例的性质
题型:填空题

Hello, my name is Peter. I study at a school in the UK. School days usually begin at 9 a.m. in the UK. So I usually go to school at 8.45 a.m. School is over(结束) at 3.30 p.m. So I have enough time to go to clubs.

I’m good at all my lessons. But my favorite lesson is Cooking. All my teachers are very friendly and helpful. I never go home for lunch, I have lunch at school with my classmates. After lunch, we often go to the school field. Sometimes we play ball games, sometimes we just sit under the trees, reading or chatting. Sometimes we also go to the Computer Center to listen to music or send e-mails(邮件) to our friends.

I like my school and have a wonderful time at school every day. 

小题1:Schools in the UK usually start at ____________.

A.8.45 a.m.

B.9 a.m.

C.3.30 p.m.

D.8.30 a.m.小题2:---How are Peter’s teachers?

---They’re all very ______.

A.friendly and helpful

B.beautiful

C.polite

D.busy小题3:---How often does Peter go home for lunch?

---            .

A.Seldom

B.always

C.Every day

D.Never小题4:After lunch, the students can ________.

A.listen to music

B.write e-mails

C.play ball games

D.A, B and C小题5:Which one isn’t right?

A.School is over at 3.30 p.m. in the UK.

B.Peter is good at all his lessons.

C.Peter has no time to go to clubs every day.

D.Peter has a wonderful time at school.

题型:填空题

下列影像方法可行任意方位断层的是()。

A.螺旋CT

B.电子枪CT

C.MRI

D.SPECT

E.PET

题型:填空题

2,4,8,16,32,()

A.34

B.64

C.72

D.54

题型:填空题

有以下程序: #include<iostream> using namespace std; class sample { private: int n; public: sample(){} sample(int m) { n=m; } sample add(sample s1,sample s2) { this->n=s1.n+S2.n; return(*this); } void disp() { cout<<"n="<<n<<end1; } }; int main() { sample s1(10),s2(5),s3; s3.add(s1,s2); s3.disp(); retyrn 0; } 程序运行后,输出的结果是

A.n=10

B.n=5

C.n=20

D.n=15

题型:填空题

地西泮经肝代谢生成的活性代谢产物称为()

A.去甲西泮

B.替马西泮

C.劳拉西泮

D.奥沙西泮

E.氯硝西泮

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