A：one
B：four
Every year，because of the destruction of man，many of the earth's plants and animals are________.
补全下面的对话。
A．Size 8，please．
B．These shoes are nice．
C．I will take them．
D．How much are they?
E．Here you are．
A：Can I help you?
B：Yes．____Can I try them on?
A：Of course．
B：____
A：OK．____
A：$50．
B：Here is the money．____
Many students take the school bus to school every day. Parents think taking the school bus is usually safe (安全的), but sometimes it is dangerous. Some students don't keep the school bus rules. What are the school bus rules?
Arrive at the bus station early.
Wait for (等候) the school bus at the bus station.
Don't run at the bus station.
Don't walk or fight on the bus.
Don't get off (下车) the bus when it goes.
某粗心的护士用体温计测得某病人的体温是38.5℃，仅用酒精擦拭后就给39℃病人和正常人测体温，则两次的体温计示数分别为____、____．
