病毒的生活特点是 [ ]
A．能独立生活
B．必须生活在活的生物体细胞内
C．生活在有机物丰富的地方
D．营腐生生活或寄生
B
根据句意，用括号内所给单词的适当形式填空。
1. The street is_________(crowded) because the Spring Festival is over.
2. The shirt is only 15 yuan. It's _________(expensive).
3. They want to visit the world's ________(large) water slides.
4. There are some ________(clown) playing with children in the park.
5. Thanks for inviting me to your party. It's a carefully _________(organize) party.
货架空间管理的操作步骤正确的是（）。
A.
B.
C.
D.
