问题 多项选择题

以下哪一项属于刀具材料应具备的性能()

A.高硬度

B.高韧性

C.高耐热性

D.高亲和性

答案

参考答案:A, B, C

写句子

按要求写句子。     

1.离家这么长时间了,我很想念妈妈。(改成反问句)

                                                                                                                 

2.清脆的歌声打断了我的思路。(改成“把”字句和“被”字句)

                                                                                                                 

3.天空的星星快活地眨着明亮的眼睛。(缩句)  

                                                                                                                

4.这些来自青海的客人非常热情。(改变词序,意思不变) 

                                                                                                                

5.小丽说:“我的作业写完了。”(改成转述句) 

                                                                                                                

6.难道他的这种行为不正确吗?  (改成陈述句)

                                                                                                                

单项选择题