问题
单项选择题
临床应用较为广泛，它多用于栓塞肿瘤、血管性疾病和控制出血，闭塞血管时间一般为2～4周，中期可吸收栓塞剂是（）
A.自体血凝块
B.明胶海绵
C.螺圈
D.鱼肝油酸钠
E.碘化油
答案
参考答案：B
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临床应用较为广泛，它多用于栓塞肿瘤、血管性疾病和控制出血，闭塞血管时间一般为2～4周，中期可吸收栓塞剂是（）
A.自体血凝块
B.明胶海绵
C.螺圈
D.鱼肝油酸钠
E.碘化油
参考答案：B
| 完形填空 | ||||
| A large cat arrived at a farm where many mice lived.None of them dared go outside for fear of being 1 by the cat. The mice decided to hold a 2 to find a way of stopping themselves from being in_3_.One day, when the cat was out, mice of all ages 4 into the meeting room. "Let's build a big trap, "one mouse 5 .When this idea was 6 , another said, "What about poisoning (毒死) her?"But 7 knew where to buy the poison.One young mouse, whose mother had become the cat's food, 8 said, "Let's cut her teeth, so she can do no more harm."But the meeting did not accept his 9 . At last, one mouse, 10 than the rest, jumped onto a table.Waving a bell, he called for 11 , "Be quiet!We'll tie this bell to the cat's tail, so we'll always know 12 she is!We'll have 13 to escape, and the slower and weaker mice will hear her coming and be able to 14 !" Hearing the words, everyone got 15 and they congratulated him on his good idea. "We'll tie it so tightly (紧紧地) that it will never 16 !" "She'll never be able to walk 17 again!Why, the other day, she suddenly appeared right in front of me!Just imagine..." However, the wise mouse said, "We must 18 who is going to tie it on her tail." There was not a sound in the room.Nobody was 19 enough to put the plan into action.The meeting ended without any decision being made. It's often very 20 to have bright ideas, but putting them into practice is a more difficult matter. | ||||
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