问题
填空题
血沉测定时，血液和抗凝剂的比例为（）。
答案
参考答案：4：1
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血沉测定时，血液和抗凝剂的比例为（）。
参考答案：4：1
| 用方框中所给短语的适当形式填空。 | |
2. David is leaving for Wenzhou _____. 3. _____, he has to travel to a country where English is not spoken. 4. Long long ago, many British people _____ to leave their country and brought the English language to other countries. 5. If you want to _____ studying English well, you need to do more listening and reading. |