下列属于变态发育的是( ) A.鸡蛋发育成小鸡 B.蚕卵发育成蚕幼虫 C.蝌蚪发

题型:选择题

问题:

下列属于变态发育的是(  )

A.鸡蛋发育成小鸡

B.蚕卵发育成蚕幼虫

C.蝌蚪发育成青蛙

D.幼兔发育成成兔

考点:昆虫的生殖和发育两栖动物的生殖和发育
题型:选择题

女性,44岁,已采用长效口服避孕药9年,近一年来出现月经稀发,并且每次月经量极少。下列哪种情况下可以继续服用()

A.闭经超过半年

B.查体发现 * * 肿物

C.查体发现子宫肌瘤

D.年龄达到45岁时不宜继续服用

E.以上均可继续服用

题型:选择题

阅读理解

     Tom arrived at the bus station quite early for Paris bus. The bus for Paris would not leave until five

to twelve. He saw a lot of people waiting in the station. Some were standing in line(排队), others were

walking around. There was a group of schoolgirls. Their teacher was trying to keep them in line. Tom

looked around but there was no place for him to sit.

    He walked into the station cafe(咖啡馆). he looked up at the clock there. It was only twenty to

twelve. He found a seat and sat down before a large mirror(镜子) on the wall. Just then, Mike, one of

Tom's workmates came in and sat with Tom.

    "What time is your bus " asked Mike.

     "There's plenty of time yet," answered Tom.

     "Well, I'll get you some more tea then," said Mike.

     They talked while drinking. Then Tom looked at the clock again. "Oh! It's going backward(倒行)!"

he cried. "A few minutes ago it was twenty to twelve and now it's half past eleven."

     "You're looking at the clock in the mirror." said Mike. Tom was so sad(难过). The next bus was not

to leave for another hour. Since then Tom has never liked mirrors.

1. Tom went into the station cafe because______________ .

A. Mike asked him to have a cup of tea    

B. it was quite early and he could find a seat there

C. he didn't like to stay with the schoolgirls

D. he wanted to have a drink with his workmate there

2. What time was it in fact when Tom looked at the clock in the mirror? 

A. Half past twelve  

B. Twenty to twelve    

C. Half past eleven    

D. Half past one

3. From the story we know that when we look at a clock in a mirror, we will find___________ .

A. the time is right    

B .it's going slower    

C. it's going backward  

D. it's going faster

4. Which of the following is true?

A. Tom arrived in Paris on time          

B. The next bus would leave in half an hour

C. After that Tom didn't like clocks any longer

D. Tom looked at the clock in the mirror only once

5. Which of the following is the title(题目) of the story? 

A. The Mirror of the Station        

B. Not A Careful Man

C. Missing A Bus                

D. The Clock In The Mirror

题型:选择题

肺部叩诊时,叩诊音无改变的是()

A.大叶性肺炎实变

B.中等量的胸腔积液

C.病灶距胸部表面5cm以上,直径小于3cm的病变

D.肺气肿

E.空洞型肺结核

题型:选择题

把高级程序设计语言编制的源程序转换成机器能执行的程序,这是由哪种系统软件完成的______

题型:选择题

首任民革 * * 是()。

A、孙中山

B、李济深

C、宋庆龄

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