小明同学做“探究并联电路的电流特点”实验的电路如图所示。

如图，把原来弯曲的河道改直，A，B两地间的河道长度变短，这样做的道理是（　　）

.某有机物的结构简式为，它在一定条件下可能发生的反应是
①加成；②水解；③酯化；④氧化；⑤中和；⑥消去；⑦还原

看拼音写词语。

zuàn shí	jiāo kě	shuǐ guàn	xǐ chū wàng wài	cōng cōng máng máng
____	____	____	____	____

fǎn zhèng	dì gěi	rěn bú zhù	tuò mo	yǒng chū	xīn xiān
____	____	____	____	____	____

完形填空
    My mother is a doctor.She is unable to get back home 1 every day.And she has to work on weekends sometimes.So it's hard for her to do all the 2 after work.
    As a member of the family，I think it's my duty to 3 some housework.4Mom always says she doesn't need any help，there are always things I can do.5 ， I can help do the dishes and set the table.I'm sure Mom loves me 6 to help her.
    What's more，I'm trying to be 7.I wash my own clothes，tidy up my bedroom and take care 8 my things.I'm old enough to do these things.And I can't9 on my parents forever.
    Always show your 10 to your mom for everything she does.I believe she will feel sweet.Try it now.