问题 单项选择题

人体组织与体液中,下列哪种最能使声衰减程度加重

A.胆汁

B.血液

C.脂肪

D.胶原纤维

E.钙质

答案

参考答案:E

解析:

液体中含蛋白成分愈多,声衰减愈高。组织中含胶原蛋白和钙质愈多,声衰减愈高,例如:瘢痕组织、钙化和结石、骨组织均有显著的声衰减,而且常伴有声影。人体组织中以骨骼和含气肺衰减程度最高,而且均伴有声影(骨骼结石后方声影边界清晰;含气肺的混响后方声影的边界模糊不清)。

阅读理解

Problems
Solutions(解决办法)
My best friend Jack goes on vacation a lot and always brings me something expensive. I don’t have enough money to get him anything every time. What should I do?
Bob
Souvenirs don’t have to cost a lot. Show him you are thinking of him. That’s important. Imagine how excited he would be if he got a postcard from you!
Miller
I have a crush on a movie star. I really wish I did not. I have had dreams about him, and I even find myself wishing to be his wife. Are there any ways to stop this?
Alice
A star is cute, but what else? What do you think is important for person? Being good-looking or kind-hearted? Remember that the star in the movie probably isn’t what he is like in real life. So don’t let yourself spend too much time on the star. Staying with friends or taking more activities will help you get him out of your mind.
Miller
I’m always arguing with my parents. I hate it, but I can’t help it. What can I do?
Harry

Sometimes it seems that our parents just don’t know us well, doesn’t it? When I’m arguing with my parents, I usually take a walk and calm myself down. It gives me time to clear my head. That means I can talk to them and solve(v.解决) the problem. Have a try—parents are easier to talk with when you are cool and calm.
Miller
小题1:__________ always brings his/her friend some expensive souvenirs after vacation
A.BobB.AliceC.HarryD.Jack
小题2:Miller thinks Bob ________________.
A.should buy some expensive souvenirs for his friend.
B.could post his friend a postcard
C.should make enough money for his friend
D.doesn’t need to get his friend anything at all
小题3:Alice says “I have a crush on a movie star”, it means _______________.
A.she loves a movie star too much
B.she doesn’t know the movie star
C.she is the wife of the movie star
D.she wants to argue with the movie star
小题4:Miller ______________.
A.is a person who can give students some advice
B.thinks a movie star in really life is the same as he is in the movie
C.thinks Alice should spend much time on the star
D.needs help
小题5:Harry always argues with his parents _______________.
A.because his parents like arguing with him
B.because he hates his parents
C.because he doesn’t have enough money to buy friends gifts
D.but he doesn’t like arguing with them
单项选择题

某省A矿系私营企业,该矿仅有一个与地面出口直接相连的通道,没有按规定设置行人通道,没有独立的通风系统。因该矿主井筒中盲竖井井壁变形,后经承包人李某、生产矿长王某、主井生产矿长胡某共同协商,并经法人代表人赵某同意,进行简单维修后,在存在严重安全隐患的情况下仍安排工人进行生产。2007年3月14日4时许,因罐体卡在井壁上,负责维修的牛某违章作业,当日8时30分许,导致井下发生火灾,致该矿井下作业的19名工人中9人死亡。同时由于该矿及相邻的其他铁矿长期越界开采,导致井下巷道贯通,风流紊乱,烟气蔓延,且各矿均没有设置井下作业人员逃生的安全通道,没有基本的安全保障措施,直接导致事故的升级和扩大,造成相邻的多个矿井共70名矿工死亡的严重后果。根据上述案情,回答以下问题:

下列有关人民检察院诉讼行为不正确的是:( )

A.某市某区公安分局移送某区人民检察院审查起诉的王某涉嫌抢劫一案,如果发现犯罪嫌疑人没有违法犯罪行为的,某区人民检察院应当书面说明理由,将案卷退回公安机关处理

B.某市人民检察院发现其渎职侦查部门侦查终结移送来的崔某涉嫌玩忽职守一案的犯罪事实并非犯罪嫌疑人崔某所为,则应当退回渎职侦查部门,书面建议其重新侦查

C.司某贩卖毒品达4600克,案情十分复杂,则在审查起诉阶段,其聘请的律师要想会见他,不需要经批准,应当在五日内安排会见

D.补充侦查应当以二次为限,公安机关补充侦查结束移送人民检察院后,人民检察院应当重新计算侦查期限