单项选择题
A、The woman had been planning for the conference. B、The woman called the man but the line was busy. C、The woman didn’t come back until midnight. D、The woman had guests all evening.
A、 civil wars reduced about 1000 000 people B、 the Augustan censuses included women and children C、 population explosion hypothesis is reasonable D、 some civil wars didn’t cause high casualties
A. the quantity of cracks decides the speed of an earthquake B. the larger amount of pressure, the faster the transmission signals are C. the larger the magnitude is, the longer pre-seismic signals an earthquake have. D. the stress signal is detectable with two sensors a few yards away from each other