基因型为AaBbCc(三对等位基因位于三对同源染色体上)的精原细胞进行减数分裂,

题型:选择题

问题:

基因型为AaBbCc(三对等位基因位于三对同源染色体上)的精原细胞进行减数分裂,产生了基因型为abc的精细胞,那么初级精母细胞的基因组成为[ ]

A.aabbcc

B.aaaabbbbcccc

C.AaBbCc

D.AAaaBBbbCCcc

考点:精子的形成过程
题型:选择题

(1)WANTED                           (2)SUMMER JOB

Are you working hard? Do you like to    Do you like to talk with people? Do you like to

meet people? If your answer is "Yes", then we  write stories? If you want to work for our

have a job for you as a waiter.            magazine as a reporter,  please call Karen at

Call AL Hotel at 556779                 558366

(3)HELP WANTED                  (4)CLEANER WANTED

Do you like babies? Can you look after one   Can you make a large house clean and

baby for two days? If you are sure to take good  tidy? If you hope to get the job paid at $20

care of it, call us at 766588.              once a week, call us this evening.

$ 80 0rmore                             8: 00-20: 20

Today Hurry                           Tell: 833800

小题1:The above job ads are probably from_______.

A.a newspaper

B.a story

C.a science book

D.a guide book小题2:If the owner of the large house asks a cleaner to tidy his house twice a week,  how much will the cleaner get in a month?_______.

A.$120

B.$160

C.$200

D.$240小题3:If you are a college student of English who enjoys writing during your summer holiday,  you will be more interested in the job in_______.

A.ad(l)

B.ad(2)

C.ad(3)

D.ad(4)

题型:选择题

土地估价师换证前必须按规定接受一次专门业务的继续教育培训。

题型:选择题

患者,女,36岁,右上6缺失,2天前行铸造固定桥修复,复诊主诉,进食痛,不敢咬合,无自发痛,检查见右上7面有磨合痕迹,叩痛(+),X线片未见异常。

最可能的原因是()

A.基牙龋坏

B.备牙时穿髓

C.备牙时机械刺激

D.粘结剂刺激

E.存在咬合高点

题型:选择题

散碎物料的筛分过程,可以看做由()和透筛两个过程组成。

A、输送

B、运动

C、分层

D、松散

题型:选择题

主张将组织中管理者的职能与工人的作业职能加以分离、各负其责的学者是()

A.威尔逊

B.韦伯

C.古立克

D.泰罗

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