下列哪项不是钩虫引起宿主慢性贫血的原因：
线虫生长发育最显著的特征是
Don’t drive so __________ (care); you’re going to have an accident!
Eating too much chocolate can be ______ (harm) to your health.
I hate it when people are __________ (polite).
You worry that you’ll ___________ (leave) out if you keep quiet.
Shanghai is a very big city full of people and bicycles, high-rise buildings and small ___________ (tradition) shops.
Don’t be afraid of the dog; he’s __________ (harm).
Congratulations! You did the job __________ (perfect).
I was so bored by his __________ (end) speech that I fell asleep.
Don’t sit in this chair; it’s very __________ (comfort).
Mary hadn’t studied for the test, so she answered most of the questions ______ (correct).
1. Students (require) to book their study time and seat online for the reading room.
2. The key players within an (organize) are those employees who have important positions in it.
3. No tip works for everyone because we all have different styles and (weak) when it comes to organizing our time.