某病人因心衰住院，住院后患了流感，其传染来源为
A．动物B．空调器C．空气D．医院其他患者E．血液
参考答案：D
根据句意用括号内所给单词的适当形式填空。
1.Wei Hua gave me two______ yesterday. (book)
2.That pen isn't yours. It's ______ . (her)
3.The ______ lesson is very easy. (six)
4.John is ______ than Sam. (tall)
5.Can you help ______ with my English? (I)
6.Lin Lin is the ______ in our class. (young)
顾客价值的大小由顾客总价值与顾客总成本两个因素决定。( )
