A：在他当校长期间，使这所小学的教学质量，在全区属于上乘。
B：我是通过生活本身开始的学习生涯的。
C：为了防止这类事故不再发生，我们必须采取有效措施。
D：李老师耐心地纠正并指出了我这次单元练习中存在的问题。
下列昆虫中发育过程均为不完全变态的一组是（ ）
清朝实行的“重农抑商”和“海禁”政策产生的相同影响是( )①阻碍了资本主义萌芽的发展②强化了自给自足的自然经济③造成了中国的日益落后④加速了小农经济的解体
Xiao Qing is my friend. He is thirteen years old. He is in a big school. There is a playground in the middle of his school. The red classroom building is on its left and on its right is the library. Behind the playground is the dining hall. Xiao Qing and his classmates have lunch there from Monday to Friday. Every day they can eat meat. Today is Friday. They eat beef .There is soup, on Wednesday. It's Xiao Qing's favourite. Basketball is his favourite sport. He plays it on Tuesday and Thursday afternoon. But his classmates play football and jianzi. Today is Xiao Qing's birthday. He wants a football. So he can play it with his classmates.
