解:(1)-12006+-12-<
法律最主要的特征是( )
如图是人体结构层次图,请分析并回答问题.
(1)①②③过程表示细胞____ ,在此过程中,细胞核内的____ 复制后形成相同的两等份,分别进入两个新细胞.
(2)④过程表示细胞____ ,在图中的各种组织,具有保护和分泌作用的是____ ____ 组织,能传导神经冲动的是____ ____ 组织.
(3)人体的结构层次是:细胞→组织→____→____ →人体.其中,人体具有而植物没有的是____ .
下图中的设备是测量
My School Day in London Tim Hunt is telling 1 Chinese classmates about his school day in London. My school day in London is different 2 my school day here in China. School starts 3 nine o'clock. I get up at 7:00 4weekdays. I go to school 5 underground(地铁). It 6 about forty–five minutes. I have 7 at school. Classes are over at 3:15. It is early, 8 I stay at school and play games 9 my friends. I am 10 the basketball team. We practice(联系)on Monday 11 Wednesday. We have a match 12 Friday afternoon. On Saturday 13 I get up late. Then I 14 my parents tidy(弄整洁)the house and the garden. In the evening I often go to film or a club(俱乐部).On Sunday I have a good rest and of course, I do 15.