People use the 311 call system to report _____.
People use the 311 call system to report \_\_\_\__.
可知
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（ ）．
Walking down the street the other day, _____.
Walking down the street the other day, \_\_\_\__.
配平：____+____=____+____+____在以上氧化还原反应中，被氧化与被还原的硫原子数之比为____．
配平：\_\_\_\_+\_\_\_\_=\_\_\_\_+\_\_\_\_+\_\_\_\_在以上氧化还原反应中，被氧化与被还原的硫原子数之比为\_\_\_\_．
The author believes that _____.
The author believes that \_\_\_\__.
As children enter adolescents, they begin to do the following EXCEPT _____.
As children enter adolescents, they begin to do the following EXCEPT \_\_\_\__.
When many American parents don’t know how to deal with their children they seek advice from the following EXCEPT_____.
When many American parents don’t know how to deal with their children they seek advice from the following EXCEPT\_\_\_\__.
Why, according to the passage, did ancient Chinese coins have a square hole in the center?
Why, according to the passage, did ancient Chinese coins have a square hole in the center?