【简答题】连续刺激肌肉,每后一次刺激落在前一次收缩的舒张期内引起的复合收缩称为 108.短时间一连串最大刺激作用于肌肉,若相继两次刺激间的时距小于绝对不应期时,第二个刺激引起的变化是 A.无肌肉收缩 B.一次单收缩 C.一连串单收缩 D.不完全强直收缩 E.完全强直收缩
【单选题】连续刺激时,当后一刺激落在前次收缩的舒张期内引起的收缩称为( )。
【单选题】When we arrived in the deep night, we found there was no food _______ as all the shops were shut.
【单选题】When we reached the station, the train had not arrived yet so we______.
D.
had not needed to hurry
【简答题】When we arrived, there was a smell of cooking (come) ______from the kitchen.
【简答题】When we arrived at the station, it was said that the train would be late for ten minutes, so we _____. A) needed not to hurry B) needn't have hurried C) didn't need hurry D) hadn't needed to hurry
【单选题】It was ________ that we felt tired when we arrived.
D.
such a so long journey
【简答题】.When we reached the station, the train had still not arrived; so we ______. a. needed not to hurry b. needn’t have hurried c. need not to have hurried d. didn’t need to hurry