化学在生活中无处不在．下列各项中，你认为合理的是[ ] A．

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问题不定项选择题

化学在生活中无处不在．下列各项中，你认为合理的是[ ]

A．变霉大米用水洗净后煮熟可放心食用

B．合格的火腿肠中含有少量亚硝酸钠，因此也不能食用

C．不可用工业盐（NaNO₂）腌制咸菜

D．CO与血红蛋白的结合能力比O₂的大

答案

答案：D

阅读理解

根据短文判断正(T)误(F)。

It is the fifth of June. It's Sam and Tom's birthday. Sam and Tom are from America, but now they are in

Shanghai. Today is their birthday. They are brothers. We can see a big cake on the table. There are a lot of

presents on the table, too. Where are the children? They're playing in the garden. Wang Ying is behind the tree.

Tom is looking for her. Li Lei is running after Liu Tao. Beibei is playing ball games with Sam. They are having

a good time.

( ) 1. Tom and Sam are brothers.

( ) 2. There are a lot of presents and two big cakes on the table.

( ) 3. The children are playing ball games.

( ) 4. Tom is looking for Wang Ying.

( ) 5. Sam and Tom are having a good time.

填空题

T2000支持（）和（）操作系统。