问题 单项选择题

尿激酶

A.可抗血小板聚集和抗血栓形成
B.主要用于肝素过量引起的出血
C.直接激活纤溶酶原转变为纤溶酶,起到溶血栓作用
D.主要用于恶性贫血和巨幼红细胞性贫血
E.用于香豆素类引起自发性出血的解救

答案

参考答案:C

解析:尿激酶激活纤溶酶,促进纤维蛋白溶解,也称血栓溶解药,但对形成已久、已机化的血栓无效;用于治疗急性肺栓塞、急性动脉栓塞、心肌梗死、脑梗死。

完形填空
Three small fish lived in the sea. When they were very young, their parents died. They had to      each other day after day. Finally, they grew up and      to swim deeper and further.
One morning. the three fish were     to a shallow (浅) water by a big wave (浪). A small boat was taken there. too. It was hard for the fish to go back to the sea because the boat was right in front of them. The largest fish realized that they were      and said they had to find a way to leave there as fast as possible. The second largest fish      with his elder brother, but the youngest one did not. He said that there was much      for their activities, so he would not worry at all and still swam around   .At last, the largest fish returned to the      by jumping over the lowest part of the boat. The second largest fish also succeeded in      his eider brother in the other side of water. But the youngest one didn't follow them and still swam joyfully.
Two hours later, when the      rose up, the water in the small shallow corner dried up. The fish who did not try to return to the sea died of lack(缺乏)of water.
小题1:
A.listen toB.look afterC.talk withD.worry about
小题2:
A.daredB.hatedC.refusedD.stopped
小题3:
A.allowedB.givenC.invitedD.taken
小题4:
A.in safetyB.in doubtC.in dangerD.in peace
小题5:
A.agreedB.talkedC.comparedD.discussed
小题6:
A.timeB.foodC.waterD.air
小题7:
A.slowlyB.sadlyC.luckilyD.happily
小题8:
A.seaB.riverC.lakeD.pond
小题9:
A.catchingB.joiningC.takingD.telling
小题10:
A.stormB.starsC.moonD.sun
单项选择题