在发生雷暴时，人体最好离开可能传来雷电侵入波的线路和设备（）米以上。

发生事故时，应报告的内容？

情景交际：根据语境，用适当的语句完成对话。

Mother: You look a bit worried ,Tony.   1  ?

Son: l seem to be getting heavy these days.

Mother: That's a problem. Can I offer you some advice?

Son:   2   . What do you think I should do?

Mother: on the one hand, you should stop eating too much. on the other hand,_3   .

Son: Some of my friends have told me the same thing ,but l'm too busy to do exercise.

Mother: Then why not join a club on weekends?

Son: But   4  ?Mother: You'll can join  swimming club. You want to learn to swim ,don't you?

Son: That's a good idea. Thank you , Mum.

Mother:   5   . I hope I will help.

急性化脓性扁桃体炎需与以下哪些疾病鉴别（）。

A.咽白喉

B.白血病性咽颊炎

C.单核细胞增多症性咽颊炎

D.扁桃体肿瘤

E.樊尚咽峡炎

以下关于测试时机的叙述中，正确的是（）。

A．应该尽可能早的进行测试

B．若能推迟暴露软件中的错误，则修复和改正错误所花费的代价就会降低

C．应该在代码编写完成后开始测试

D．需求分析和设计阶段不需要测试人员参与