问题
单项选择题
锡基和铅基钎料属于（）钎料。
A.软
B.硬
C.难熔
D.超硬
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
锡基和铅基钎料属于（）钎料。
A.软
B.硬
C.难熔
D.超硬
参考答案：A
A. Show me your eraser.
B. Open your pencil-case.
C. I have a ruler.
3. 9月10号是教师节，我们应说： [ ]
A. Hello! Miss White!
B. Happy Teachers' Day!
C. I'm going to school.
4. 课上，老师请同学们合上书，应说：[ ]
A. Open your books.
B. Show me your books.
C. Close your books.
5. 你刚买了一支新钢笔，Sarah想看一看，她应说：[ ]
A. Please show me your pen.
B. Show me your pencil, please.
C. Please show me your crayon.