问题
选择题
分娩时由母体产出的有:
A 胎儿 B 胎盘和脐带 C 卵细胞 D 受精卵
答案
AB
胚胎在子宫内经过约280天的生长和发育,胎儿就要出生了。成熟的胎儿连着胎盘、脐带从母体 * * 排出的过程,叫做分娩。
分娩时由母体产出的有:
A 胎儿 B 胎盘和脐带 C 卵细胞 D 受精卵
AB
胚胎在子宫内经过约280天的生长和发育,胎儿就要出生了。成熟的胎儿连着胎盘、脐带从母体 * * 排出的过程,叫做分娩。
完形填空。 Kelly Hall is 1 bank clerk, she works in a bank in town. She is 2 from morning to night. She gets up at six o'clock in the morning and 3 at half past six. After that she prepares (准备) breakfast. She has breakfast 4 the family at a quarter past seven. She goes to 5 at a quarter past eight. She finishes work at half past four and 6 home. She arrives home at a quarter to five. At half past six she makes dinner. Sometimes she watches TV __7__ an hour. On weekends, she often __8__ her son to the zoo. Her son likes the elephants. The elephants like 9 their friends. The little boy also likes koalas. They eat _10 _ at night. How interesting! | ||||
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