2.下列物质合成时,不需要氮源的是( C )
A.三磷酸腺苷 B.酪氨酸酶 C.脂肪酸 D.核酸
1.下列关于细胞的说法正确的一组是( C )
①含细胞壁结构的细胞必定为植物细胞
②蓝藻以群体形式存在,所以单个蓝藻不是一个个体
③新细胞可以从老细胞中产生 ④能进行自养的生物不一定是绿色植物
A.①③ B.①④ C.③④ D.②⑤
第二节:书面表达(满分25分).
假如你是李明,已经升入高三,学习非常紧张。为此,你们班同学就“高三是否应该开展体育课”进行了一次讨论。请你根据下列所给的信息给校长Mr.Smith写一封120词左右的信,介绍你们讨论的情况,并谈谈你的看法。(参考词汇:体育 P. E)
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第一节:短文改错(共10小题;每小题1分,满分10分)
此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误在该行右边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:
此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
此行错一个词:在错的词下画一横线,在该行右边横线上写出改正后的词。
注意:原行没有错的不要改。
Dear Mary,
I have received your E-mail just now. Don’t worry about 76.
me. I’m getting on well with my research works in the lab. 77.
But to my surprise you say you will give up learn English. 78.
The reason is because you have not done well in it recently 79.
and you have lost interest. I’m afraid I couldn’t agree with 80.
you . I know it is not easy to learn English, and English 81.
is widely used in the world today and it will be important 82.
tool in their future work. Besides, it is becoming more and 83.
more important in our daily life. If you study hard, and 84.
you will succeed. Do remember that where there is a will there 85.
is a way. I’ m looking forward to hearing good news from you.
Yours ,
wangFei
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