weather summer there What s in the like

听短文，完成下面小题。

do today to you going are what

    Sam is my penfriend. There are five people in his family. His father is a teacher. His mother is a nurse. He has a sister and a brother His sister is twenty minutes younger than his brother They are all middle school students now. They are in the same school. They go to school together every day. They are all good at PE. They are Americans, but they can speak a little Japanese. They lived in Japan last year. They would like to come to China next year I hope they will come soon.

如图甲是测量阻值约几十欧的未知电阻的原理图，图中是保护电阻（），是电阻箱（），是滑动变阻器，和是电流表，是电源（电动势，内阻很小）．
在保证安全和满足要求的情况下，使测量范围尽可能大．实验具体步骤如下：
（Ⅰ）连接好电路、将滑动变阻器调到最大；
（Ⅱ）闭合，从最大值开始调节电阻箱，先调为适当值，再调节滑动变阻器，使示数，记下此时电阻箱的阻值和的示数；
（Ⅲ）重复步骤（Ⅱ），再测量组和的值；
（Ⅳ）将实验测得的组数据在坐标纸上描点．
根据实验回答以下问题：
①现有四只供选用的电流表：
A．电流表（，内阻为）
B．电流表（，内阻未知）
C．电流表（，内阻为）
D．电流表（，内阻未知）
应选用______，应选用______．
②测得一组和值后，调整电阻箱，使其阻值变小，要使示数，应让滑动变阻器接入电路的阻值______（“不变”、“变大”或“变小”）．
③在坐标纸上画出与的关系图．
④根据以上实验得出______．

Dear Gao Shan,
    How are you? It's very nice of you to write (1) ______ me. (2) ______ your letter I know a lot (3) ______ you and your school now. I will tell you (4) ______ about me and my school.
    I'm eleven (5) ______ old. I'm in Class 3 Grade 5 at Tou Qiao School. My mother is a (6)______, She (7) ______ maths. My father is an engineer. He's good (8) ______ his work.
    There (9) ______ 900 students and 60 teachers in our school. Our (10) ______ are big and bright.

Yours
Wang Bin