【单选题】He went to the park yesterday.(变为否定句)
A.
He not went to the park yesterday.
B.
He didn't go to the park yesterday.
C.
He don't go to the park yesterday.
D.
He doesn't went to the park yesterday.
【单选题】If you go to the park tomorrow morning, _____. [ ]
【单选题】某双大腿挤压伤病人,测得血清钾浓度为6.9mmol每升,脉搏54次每分,伴有心律不齐。应立即注射的药物是
【简答题】Why does he feel proud? Because he has helped to make the park ______.
【单选题】在我国,交流电力设备的额定频率为( )。
【单选题】He usually ____ grasshoppers in the park. But now he is a kite in the park. [ ]
【简答题】同学们可以先上传草图上来,不少于20个草图方案