最大粒径25mm碎石或卵石的表观密度试验所需试样的最少数量为（）㎏。A.10 B.2

下列哪项对手部创伤出血止血的说法是错误的()

A．局部压迫包扎止血

B．大出血时，采用止血带

C．寻找出血点结扎止血

D．止血带应缚于上臂上l/3部位

E．使用止血带应定时放松，每小时5～10分钟

Recently, Chinese netizens (网民) enjoy themselves on “growing and stealing crops” on the Internet. This is a game called “Happy Farms”. Now more and more people are joining in the game, and getting addicted. Some of them are even found playing the game at work. Because of this, some players have been fired by their bosses. Lovers have broken up, but none of them can stop Happy Farms from becoming more popular.

Here we interviewed some young netizens and let’s see what their opinions were.

Nongmin: Playing happy Farms at work, that’s terrible! A clerk was fired because she was online playing it at work.

King: I find that all the dreams of having houses and fields, which are very hard to get in real life, are very easy to be realized in the games. I think I know the reason why the game is so popular.

Kaixin: We have to know how to control ourselves. We should keep our minds on study. Games are just games. I prefer to play sports with my classmates when I am free.

Kitty: I like Happy Farms. My high-pressure work makes me feel like I can’t breathe. I wish I could have a real house and farm, but it seems so far away. I have to turn to virtual(虚拟) nature for my own house and farm.

People often get tired from work or study, so they go to their own farms, take care of their crops and pull out weeds. It is really delightful to forget about the pressure. But some players work from morning to night to “grow and steal crops”. They lose themselves in the game and show no interest in anything else. It is really terrible.

小题1:From this passage, we know that “Happy Farms” is _____.

A．a popular online game

B．a kind of sport

C．an interesting online film

D．a real farm小题2:The word “fire” means _____ in the underlined sentence in the first paragraph.

A．火

B．雇佣

C．解雇

D．着火小题3: From Kaixin’s words, we can guess that he is probably a_____.

A．farmer

B．worker

C．student

D．clerk小题4:_____ have the similar idea about “Happy Farms”.

A．Nongmin and King

B．King and Kitty

C．Kaixin and Kitty

D．Nongmin and Kaixin小题5: From the passage, the writer thinks _____.

A．“Happy farms” is good for people’s work and study

B．people can play “Happy farms” at night

C．people should never play “Happy farms”

D．“Happy farms” sometimes can help you relax but it may also cause problems

有关开放性关节创伤的处理原则下列哪项不正确（）

A.关节囊已敞开时，大量盐水冲洗关节腔

B.千方百计设法闭合关节腔

C.敞开关节囊，放置引流

D.全身及局部应用抗生素，抗生素放入关节囊内

E.术后持续皮牵引或骨牵引作外固定

黑脉金斑蝶的幼虫以乳草植物为食，这种植物所含的毒素使得黑脉金斑蝶对于一些捕食它的动物来说有毒。副王峡蝶的外形和黑脉金斑蝶非常相似，但它的幼虫并不以乳草植物为食。因此可以得出结论，副王峡蝶之所以很少被捕食，是因为它和黑脉金斑蝶在外形上的相似。 以下哪项如果为真，最能削弱上述论证( )

A．有些动物在捕食了以乳草植物为食的昆虫后并不中毒

B．仅仅单个蝴蝶对捕食者有毒并不能对它产生保护作用

C．有些黑脉金斑蝶的捕食动物也捕食副王峡蝶

D．副王峡蝶对大多数捕食动物都有毒

逆转录酶是催化以（）为模板，合成（）的一类酶，产物是（）。