“这真是一支好钢笔”这句话,有多种方法可以影响它所表达的意思,其中影响最大的一项是[ ]
A.改变句子的语序
B.读时重音不同
C.改变句子的标点符号
D.读时音量不同
答案:C
在“研究小车速度随时间变化的规律”实验中,用打点计时器记录纸带运动时间.打点计时器接在50Hz的交流电源上.如图所示为做直线运动的小车带动纸带记录的5个计数点,每相邻两个计数点间都有4个点未画出.用刻度尺测出计数点A、B、C、D、E到O点的距离为x1=8.78cm、x2=16.08cm、x3=21.87cm、x4=26.16cm、x5=28.94cm.由上面的数据分析,小车的运动是______,小车的加速度大小为______m/s2.
Currently, the number of first-time admissions of individuals diagnosed as manic-depressives to hospitals in Great Britain exceeds by nine times the number of admissions of such patients to public and private hospitals in the United States, even though the population size of the United States is many times that of Great Britain. Which of the following, if true, would be most useful to an attempt to explain the situation described above ?()
A.The term manic-depressive refers to a wider range of mentally ill patients in Great Britain than it does in the United States.
B.The admission rate in the United States includes those individuals who visit clinics for the first time as well as those who are admitted directly to hospitals.
C.A small percentage of patients diagnosed as manic-depressive in Great Britain are admitted to private nursing homes rather than hospitals.
D.The variety of training institutions in psychology in the United States is greater than in Great Britain, reflecting the variety of schools of psychology that have developed in the United States.
E.Seeking professional assistance for mental health problems no longer carries a social stigma in the United States, as it once did.