下列细胞中最容易发育成植物体的是() A.植物的卵细胞 B.被子植物的受精卵 C.植

题型:单项选择题

问题:

下列细胞中最容易发育成植物体的是()

A.植物的卵细胞

B.被子植物的受精卵

C.植物的精细胞

D.被子植物的叶肉细胞

考点:高中生物细胞的分化、癌变、衰老和凋亡细胞的分化、癌变、衰老和凋亡题库
题型:单项选择题

A punctual person is in the habit of doing a thing at the proper time and is never late in keeping an appointment.The unpunctual man, on the other hand, never does what he has to do at the right time. 小题1:

There's a proverb which says,“Time flies never to be recalled.” This is true.小题2:The unpunctual man is forever wasting his most valuable possessions as well as others'.The unpunctual person is always complaining that he finds no time to answer letters, or return calls or keep appointments.小题3: He knows that he can get through his huge amount of work only if he faithfully keeps every appointment and deals with every piece of work when it has to be attended to.

小题4: .If a person is invited to dinner and arrives later than the appointed time, he keeps all the other guests waiting for him.Usually this will be regarded as rude both to the host and the other guests.

Unpunctuality, moreover,is very harmful when it comes to one's duty.Imagine how it would be if those who are put in charge of important tasks failed to be at their proper place at the appointed time.小题5:

A.They appear to be busy but never get well paid.

B.He is always in a hurry and ends up losing time.

C.Maybe nobody minds being kept waiting at a dinner party.

D.A lost thing may be found again, but lost time can never be regained.E.But the man who really has a great deal to do is very careful of his time.

F.A man who is known to be habitually unpunctual is never trusted by others.

G.Failure to be punctual in keeping one's appointment is a sign of disrespect towards others.

题型:单项选择题

原发性三叉神经痛的首选治疗方法是()

A.理疗

B.封闭疗法

C.药物治疗

D.经皮半月神经节射频电凝疗法

E.手术治疗

题型:单项选择题

月经每20日一行,量多色淡,小腹空坠隐痛,纳少便溏。诊断为

A.月经先期

B.月经过多

C.经行腹痛

D.经行泄泻

E.以上都不是

题型:单项选择题

糖尿病最常见的神经病变是()

A.周围神经病变

B.神经根病变

C.植物神经病变

D.脊髓病变

E.颅神经病变

题型:单项选择题

男孩,3岁。尚不会独立行走,智力亦落后于同龄儿。

经检查,确诊后,下列哪点处理正确()

A.明确诊断后即应开始治疗

B.开始服用5~10mg/d(甲状腺片)

C.每隔2~4周增加5~10mg/d至精神活泼、食欲好转、便秘消失而又无甲状腺功能亢进时再用维持量

D.应终身服用

E.需长期应用碘剂治疗

F.绒毛膜促性腺激素

G.促蛋白合成激素

H.hGH替代疗法

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