“麻雀虽小,五脏具全”,生物体内存在不同的组织器官是由于细胞的( ) A.生长

题型:选择题

问题:

“麻雀虽小,五脏具全”,生物体内存在不同的组织器官是由于细胞的(  )

A.生长

B.分裂

C.分化

D.癌变

考点:细胞的分化
题型:选择题

短文填空。

  I have a good friend. His name is John Brown. He is a school 1._____ boy.His school is far from his home.Every day it take him a lot of time to get there. The road 2._____ not flat(平),so he can't 3._____ to school by bike. He often 4._____ there by bus or on foot. It takes him twenty 5._____ to get there by bus or an hour on foot. He must 6._____ up very early everymoming.He 7._____ no time for breakfast at home. He often 8._____ something for breakfast on the way or on the bus. He doesn't want to 9._____ late for school, so sometimes he 10._____to school.

题型:选择题

如图所示,物体A和B的质量均为m,且分别用轻绳连接跨过定滑轮(不计绳子与滑轮、滑轮与轴之间的摩擦)。当用水平变力F拉物体B沿水平方向向右做匀速直线运动的过程中(   )

A.物体A也做匀速直线运动

B.绳子拉力始终大于物体A所受的重力

C.物体A的速度小于物体B的速度

D.地面对物体B的支持力逐渐增大

题型:选择题

男性,69岁,平素体健,在跑步时,不慎摔伤右髋部。X线提示:右侧股骨颈骨折,GardenⅢ型。首选的治疗方法是()。

A.卧床,皮牵引

B.骨牵引

C.多根空心钉内固定

D.股骨头置换术

E.全髋关节置换术

题型:选择题

转让房地产开发项目,转让人与受让人应当自土地使用权变更登记手续办理完毕之日起( )日内,持房地产开发项目转让合同到房地产开发主管部门备案。

A.30

B.45

C.60

D.90

题型:选择题

乳牙的龋失补牙面数用以下哪种符号表示()

A.DMFT

B.DMFS

C.dmft

D.dmfs

E.defs

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