问题
填空题
表面粗糙度代号在图样上应标注在可见轮廓线、（）、引出线或其延长线上，符号的尖端必须从材料外指向表面，代号中数字及符号的注写方向必须与（）一致。
答案
参考答案：尺寸界线;尺寸数字
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表面粗糙度代号在图样上应标注在可见轮廓线、（）、引出线或其延长线上，符号的尖端必须从材料外指向表面，代号中数字及符号的注写方向必须与（）一致。
参考答案：尺寸界线;尺寸数字
阅读下列短文，根据短文中的信息完成文后表格。在答题卡标有题号的横线上，写出空缺处 所填的单词的正确形式。 "USA? Britain? Which country is better to study in?" We often hear such discussions. As China opens its door, it is a dream for many Chinese students to study abroad. They want to learn about the outside world. It's true that studying abroad can help students develop themselves. Their foreign language skills will be improved and it may be easier to find jobs． But there are problems that should be considered．Language is the first．Students must spend a lot of time 1earning another language． Students must also leam to live without parents’care and deal with all kinds of things they haven't had to do before，like looking after themselves．There are reports about Chinese students abroad running into an ocean of difficulties and giving up finally．When they have to take care of themselves，it is hard for students to study well． Finally，studying abroad brings a heavy burden(负担) to most Chinese parents，the cost of studying abroad is very high .But is it worth it? We know that there are many famous people who have succeeded in great things through their hard work in China．Liu Xiang is a good example．Once an American teacher invited him there，but he refused． He kept training hard with his Chinese teacher. He surprised the world when he won a gold medal at the Athens Olympic Games . So when you wonder which country is better to study in，think again.
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