制作洋葱表皮细胞临时装片时,正确的盖盖玻片的方法是______ A.将盖玻片迅速

题型:解答题

问题:

制作洋葱表皮细胞临时装片时,正确的盖盖玻片的方法是______  

A.将盖玻片迅速盖在载玻片上

B.将盖玻片的一边先接触液滴,另一边慢慢盖上

C.将盖玻片放在载玻片一端,推向中央

D.将盖玻片的一边先接触液滴,另一边快速盖上.

考点:显微镜的构造和使用
题型:解答题

阅读理解。

     People like to say "Thank you" when others help them or say something kind for them. It is a very good

habit.

     You should say "Thank you" when someone walking ahead of you keeps the door open for you, when

someone says you have done your work well, or you have bought a nice thing, or your city is beautiful. We

can use "Thank you" not only between friends, but also between parents and children, brothers and sisters.

     "Excuse me" is another short sentence we often use. When you hear someone say so behind you, you

know that somebody wants to walk pass you without touching you. When others are talking, if you want to

speak to one of them, say "Excuse me" first, and then begin talking. You should also do so when you begin to

cough or make any noise before others.

     Let's learn to say"Thank you" and "Excuse me".

1. You should say "Thank you" when _______.

A. you say something kind to others

B. you help others

C. someone helps you

D. you are in trouble

2. When you are going to ask someone to tell you the way, you should say "_______".

A. Thank you

B. That's very kind of you

C. Excuse me

D. The same to you

3. The passage mainly tells us the way________.

A. to be happy

B. to be polite

C. to help others

D. to be healthy

题型:解答题

为了扩大宣传马克思主义,1918年年底,李大钊等在北京创办了《每周评论》。[ ]

题型:解答题

妊娠足月,胎位下移,腰腹阵痛,有便意或见红者,是()

A.临产

B.试胎

C.弄胎

D.分娩

E.以上均非

题型:解答题

女性,40岁。因胫骨上端肿瘤行胫骨上端骨切除,术后拟行膝关节置换治疗,选择那种假体为好()

A.髁限制型人工膝关节

B.铰链式人工膝关节

C.铰链旋转式人工膝关节

D.球臼式人工膝关节

E.后稳定型人工膝关节

题型:解答题

试述精的生理功能。

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