根据句意、汉语和首字母补全单词。

1. The box is too h_______. I can't carry it.

2. I have _______ (四十) books.

3. What time is it? It's a _______ past four.

4. Don't _______ (忘记) to bring your guitar.

5. I see a __________ in the zoo.

下列叙述中，正确的是[ ]

A．甲烷、乙烯和苯都可通过石油分馏得到

B．只用淀粉溶液即可检验食盐是否为加碘盐

C．利用油脂在碱性条件下的水解反应可以制肥皂

D．利用变性后可以再溶解的性质可分离提纯蛋白质