（）用于交流焊接时，具有及理想的稳定性，较好的载流量。A、纯钨极 B、钍钨极 C、铈钨极
题型：单项选择题
问题：
（）用于交流焊接时，具有及理想的稳定性，较好的载流量。
A、纯钨极
B、钍钨极
C、铈钨极
D、锆钨极
题型：单项选择题
第二卷（非选择题 满分35分）
第四部分写作（共两节，满分35分）
第一节 对话填空（共10小题;每小题1分，满分10分）
请认真阅读下面对话，并根据各题所给首字母的提示，在答题卡上标有题号的横线上，写出一个英语单词的完整、正确形式、使对话通顺。
M＝Mum
S＝Sara
P＝P
eter
(When Sara came home from work, she found her mother in an anxious state.)
S:What’s wrong, Mum? You seem upset.
M:It’s your (76) y sister Jill. She should have been here an hour ago.
S:Don’(77) w ,Mum!It’s not all that late and she has probably not(78)r how late it is. I think she’ll
be here soon.
(Just then Sara’s brother Peter came into the kitchen.)
P:What’s up?Mum’s on the phone and she seems as though she’s going to cry.
S:It’s Jill.She should have（79） r home by now and Mum’s getting anxious.
P:You needn’ fecl so anxious 。Mum!You know what tecnage girls are like. (80) she’s all right.
M;I can’t help but be concerned.I’ve just rung Lucy and she said Jill her our the cinema ages ago to get the
bus.
P:Well,the bus service isn’t very frequent in the evenings.Perhaps she(81)m one and is wairting for
another.Have you tried(82)p her on her mobile?
M:Yes, but there’s no reply.That made me even more worried.I think(83)s must have happened to Jill.
Do you think we should call the （84）p__________.
S:Calm down,Mum! You’ll make yourself ill.Perhaps she switched her mobile(85)o in the cinema and
forgot to switch it back on again.Or it may need to be charged.