问题
单项选择题 A型题
若罗红霉素的剂型拟以片剂改成注射剂，其剂量应
A．增加，因为生物有效性降低
B．增加，因为肝肠循环减低
C．减少，因为生物有效性更大
D．减少，因为组织分布更多
E．维持不变
答案
参考答案：C
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若罗红霉素的剂型拟以片剂改成注射剂，其剂量应
A．增加，因为生物有效性降低
B．增加，因为肝肠循环减低
C．减少，因为生物有效性更大
D．减少，因为组织分布更多
E．维持不变
参考答案：C
| 阅读理解。 |
| Everybody loves oranges. They are sweet and juicy. Some oranges do not have any seeds (种子). Some have a thick skin (厚皮) and some have a thin skin. The orange tree is beautiful. It has a lot of shiny (有光泽的) green leaves. The small white flowers smell very sweet. An orange tree has flowers and fruit at the same time. Farmers (农民) in other parts of Asia and the Middle East (中东) learned to raise (种植) oranges from the Chinese. Then they taught (教) Europeans (欧洲人). Orange is both a fruit and a color. The color of oranges is so beautiful that in English we use the name of the fruit for the color. |
| 1. Oranges are ______. |
[ ] |
| A. shiny and green B. old and wild C. sweet and juicy D. thin and white |
| 2. Some oranges do not have ______. |
[ ] |
| A. seeds B. sections C. flowers D. a skin |
| 3. Orange leaves are ______. |
[ ] |
| A. shiny B. thick C. sweet D. wild |
| 4. There are many ______ orange trees in China today. |
[ ] |
| A. shiny B. thin C. wild D. thick |
| 5. Europeans learned to plant orange trees from farmers in ______. |
[ ] |
| A. the Middle East and Asia B. Florida C. China D. Spain |