某两个长6m管径25mm的涂锌钢管要延长使用,应采取()连接。
A、外丝
B、内丝
C、异径管
D、弯头
参考答案:B
Good afternoon, everyone. My talk for today is “Early Money”. I’m going to tell you something about money used in the early days. To tell you the truth, we know little about how early people came to use money, but we do know some of the things which have been used as money. In early times in some European countries, salt was very difficult to get, so it was used as money. In some places of Asia, tea was used as money. The American Indians used nuts and other things. Perhaps the most common money of all was an animal of some kind. In some places today, cows are still used as a kind of money. So you see, things highly valued by everyday may serve as money. The Chinese were the first people to use coins as money. Oh, here are some coins of past. You can come over and have a look.
小题1:We know about the development of “Early Money”.
A.much
B.little
C.few
D.a bit小题2:Which is NOT referred to in the passage that was probably used in the past?
A.cows
B.nuts
C.tea
D.silk小题3:Why was salt used in Europe?
A.It was used every day.
B.It was cheap.
C.It was common.
D.It was difficult to get.小题4:Which one is still used as money nowadays?
A.nuts
B.salt
C.cows
D.tea小题5:This passage may be a .
A.news
B.message
C.speech
D.notice
女性,32岁,2周前出现畏寒、发热、干咳,伴有右胸针刺样疼痛,深呼吸及咳嗽时加重。近4天觉胸痛减轻,但出现进行性气促,活动后明显,伴有乏力。查体:右中下肺野叩诊浊音,呼吸音消失。下列哪项检查最有助于诊断()
A.血常规
B.ECG
C.X线胸片
D.ESR
E.PPD皮试