青蒿素（C15H22O5）是我国首创的新型抗疟疾药．下列关于青蒿素的叙述不正确的是（ ）．
青蒿素（C15H22O5）是我国首创的新型抗疟疾药．下列关于青蒿素的叙述不正确的是（ ）．
根据
If Jack _____ to the office tomorrow, give him the letter please.
If Jack \_\_\_\__ to the office tomorrow, give him the letter please.
依次填入下面横线处的句子，顺序最恰当的一项是（ ）左边是园，右边是园。是塔是桥，是寺是河，是诗是画，是石径是帆船。左边的园修复了，____。有客自海上来，____。塔更挺拔，____，寺更幽凝，____，____，____。
依次填入下面横线处的句子，顺序最恰当的一项是（ ）左边是园，右边是园。是塔是桥，是寺是河，是诗是画，是石径是帆船。左边的园修复了，\_\_\_\_。有客自海上来，\_\_\_\_。塔更挺拔，\_\_\_\_，寺更幽凝，\_\_\_\_，\_\_\_\_，\_\_\_\_。
Neither Jane nor Ted _____ going to meet Professor Jones next Friday because both of them will be busy with their classes then.
Neither Jane nor Ted \_\_\_\__ going to meet Professor Jones next Friday because both of them will be busy with their classes then.
Large quantities of water _____ needed for cooling purposes.
Large quantities of water \_\_\_\__ needed for cooling purposes.
Walking down the street the other day, _____.
Walking down the street the other day, \_\_\_\__.
第三段开头说“吾因子有所感矣”。根据后文，用自己的话说说作者的“有所感”是指什么。
第三段开头说“吾因子有所感矣”。根据后文，用自己的话说说作者的“有所感”是指什么。