选出和句子相符的图片。
⑴Please don't turn left. ____             A.
⑵Please don't walk on the grass.____     B.
⑶Please don't ride a bike.____            C.
⑷Please don't go straight.____            D.
⑸Please don't go swimming.____          E.

my/ homework/ on/ I/ always/ do/ time (.) (连词成句)

I explored every corner ____ (find) a perfect place to study.

在△ABC中，∠C=90°，∠A=72°，AB=10，则边AC的长约为（精确到0.1）（  ）

如图，一理想变压器原副线圈的匝数比为1：2；副线圈电路中接有灯泡，灯泡的额定电压为220V，额定功率为22W；原线圈电路中接有电压表和电流表．现闭合开关，灯泡正常发光．若用U和I分别表示此时电压表和电流表的读数，则（   ）