A:一个鸡蛋的重力约为10N
B:一个中学生的体重约为500N
C:一支钢笔的重力约为5N
D:一头成年水牛的重力约为300N
What colour is the shirt?
读古诗《咏柳》,根据拼音写词语。
碧玉zhuāng____成一树高,万条垂下绿丝tāo____。
—Excuse me, Mum. When can we have dinner? —Not until it in half an hour.