用温度计测量刚倒入保温杯内的开水的温度
(1)现有最高测量温度为110℃、200℃、42℃的三种温度计，测量时应该选用最大测量值为____ 的一种。
(2)在测量时，温度计插入水中后应何时读取数据，这个问题有三种不同的意见：甲认为应立即读数；乙认为应该在温度计示数稳定后读数；丙认为插入时间越久越准确。三种意见中正确的是____ 。

如图，是由5个大小相同的正方形组成的图形，则∠BAC的度数是（　　）

阅读理解
   Betty is an American school girl. She is very happy because her parents will take her to China for a visit. They are going to fly from New York on June 30 and get to Beijing on July 1. They will stay at Lido Holiday Inn. Their Chinese friends will show them around Beijing. They are going to visit the Palace Museum, the Summer Palace, the Temple of Heaven and the Great Wall. They will also visit some Chinese homes and try some Chinese food. They will spend a week in Beijing and then go to Xi’an, Guilin and some other places for sightseeing. The whole trip will take three weeks and she is sure she will have a great time in China.

52-7=____8+32=____28+10=____30-7=____74+26=____

18+3=____100-92=____64-9=____40+10=____   75-5=____