You'renotsupposedtoyourchopsticksintothefood. -X题卡

to play with playing with to play plays

and but or so

are supposed; were supposed were supposed to; are supposed to were supposed; are supposed are supposed to; were supposed to

to play with playing with to play plays

sufficient oxygen to sustain human life an explosive mixture in the compartment a toxic atmosphere in the compartment All of the above

to play with playing with to [play plays

A B C

They are supposed to shake hands They are supposed to bow They are supposed to kiss They are supposed to wave their greetings

+5、4 +5、7 +5、5 +7、7

YO3-体现了还原性若Y.为短周期元素，则Y.对应的元素有2种可能 Y.可能位于ⅤA.族 Y.最外层有7个电子

Yo/△-11；Y/Y-12；Y/△-11 Yo/△-11；Y/Yo-12；Y/△-11 Y/△-11；Yo/Y-12；Y/Y-12 Y/△-11；Y/Y-12；Y/Yo-12

Δ/Δ Yo/Yo Yo/Δ Δ/Yo

Y 侧故障相电流等于 Yo 侧故障相电流 Y 侧故障相电流等于 Yo 侧故障相电流的 2/3 Y 侧非故障相电流等于 Yo 侧故障相电流的 1/3 Y 侧故障相电流等于 Yo 侧故障相电流的 3/2

but and or so

Yo/△-11；Y/Y-12；Y/△-11 Yo/△-11;Y/Yo-12;Y/ △-11 Y/△一ll;Yo/Y-12;Y/Y-12 Y/△-11;Y/Y-12;Y/Yo-12

You're not supposed to 　　 your chopsticks into the food.