题目

Nearly 800 new pupils of Lianhua Elementary School in Hefei, Anhui Province, is reported 【1】(receive) a unique gift: an admission letter 【2】 their names are written by teachers using Chinese writing brush. 【3】(similar), Shaanxi Normal University has been sending their freshmen calligraphy admission for eleven years. Several former professors in 【4】 70s take about a week writing more than 4,500 admission letters every year.It is believed in China that “handwriting is the man,” 【5】 (mean) good handwriting can not only cultivate one’s temperament (气质), but can also rp{font-size:10.5pt;line-height:150%;margin:0;padding:0;}td{font-size:10.5pt;}（08年清华附中模拟）传感器是把非电学量（如高度、温度、压力等）的变化转换成电学量变化的一种元件，它在自动控制中有着广泛的应用．如图是一种测定液面高度的电容式传感器的示意图．金属棒与导电液体构成一个电容器，将金属棒和导电液体分别与直流电源的两极相连接，从电容C和导电液与金属棒间的电压U的变化就能反映液面的升降情况，即　　①电源接通后，电容C减小，反映h减小．　　②电源接通后，电容C减小，反映h增大．　　③电源接通再断开后，电压U减小，反映h减小．　　④电源接通再断开后，电压U减小，反映h增大．　　以上判断正确的是（　）．A．①③　　　　 B．①④　　　　C．②③　　　 D．②④