根据句意填入所缺单词。

1. There is an old _____ over the river. Every day many people go across it.

2. You need to _____ from the No. 1 bus to the No. 2 bus.

3. If you drive too fast, you may have an _____.

4. My parents live in Shanghai while I am in Beijing. I often _____ them very much.

5. Be _____. Don't drive too fast. It's dangerous.

金黄色葡萄球菌生物学特性叙述正确的是

A．革兰阳性球菌
B．革兰阴性球菌
C．革兰阴性杆菌
D．革兰阳性杆菌
E．周身鞭毛