阅读理解。 I have two new friends in our cla

题型:阅读理解

问题:

阅读理解。

     I have two new friends in our class. They are American girls. Their names Lucy and Lily. They are twelve.

They are twins. I am Wei Hua. I am Chinese. I am twelve, too. We are in No.6 Middle School. We are in Class

Two, Grade One. Lucy is Number 5 in Row 5. I am Number 5 in Row 8. Lily is behind Lucy. We are good

friends.

1. How old is Lily?

A. She's 11

B. She's 12

C. She's 13

D. She's 14

2. What class are the twins in?

A. They are in Class I

B. They are in Class 4

C. They are in Class 3

D. They are in Class 2

3. Are they students or teachers?

A. Yes, they are.

B. No, they aren't.

C. They are students.

D. They're teachers.

考点:日常生活类阅读
题型:阅读理解

请从所给的四个选项中,选择最合适的一个填入问题处,使之呈现一定的规律性()

A.A

B.B

C.C

D.D

题型:阅读理解

利用钢尺探究声音高低与振动频率的关系,请完成实验步骤:

(1)将钢尺的一端紧压在桌面上,另一端伸出桌面,拨动钢尺使它发声;

(2)______,拨动钢尺使它发声;

(3)观察比较两次实验时______和______.

题型:阅读理解
如图,在水平桌面上放置两条相距l、电阻不计的平行光滑金属导轨ab、cd,阻值为R的电阻与导轨的α、c端相连.质量为m电阻不计的滑杆MN垂直于导轨并可在导轨上滑动.整个装置放于竖直方向的匀强磁场中,磁感应强度的大小为B.滑杆的中点系一不可伸长的轻绳,绳绕过固定在桌边的光滑轻滑轮后,与另一质量也为m的物块相连,绳处于拉直状态.现从静止开始释放物块,若当物块下落高度h=2m2gR2/(Bl) 4时恰好达到最大速度,用g表示重力加速度,则下列说法不正确的是(   )

A.物块最大速度为mgR/(Bl)2

B.物块最大速度为mgR/(Bl)2

C.在此过程中电阻R放出的热量为m3g2R2/(Bl)4

D.物块达到最大速度时刻,电阻R消耗的功率为mg2R/(Bl)2

题型:阅读理解

患者女性,65岁。进行二尖瓣置换术。曾经服用过血管紧张素转化酶(ACE)抑制剂来治疗中度高血压,同时伴有视网膜Ⅱ度改变。血清肌酐值为15mg/L,血浆尿素氮值为250mg/L。术后患者排尿量为40ml/h,次日早上该患者的尿量减少到15ml/h,请从下 * * 种药物中选择最合适的一种

A.乙酰唑胺
B.呋塞米
C.氢氯噻嗪
D.螺内酯
E.氨苯蝶啶

题型:阅读理解

供洗相用的硝酸银(AgNO3)溶液

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