VIII. 略 查看更多

 

题目列表(包括答案和解析)

“(美国)全国篮球协会” 的英文缩略词是            .
A.NBA               B.BBC             C.CBA

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为探究植物细胞膜的透性,某同学以红甜菜根(液泡中含有花青素)进行下列实验:
A.将不同切片放在不同温度的蒸馏水中处理1分钟后取出。
B.再分别放在清水中浸泡1小时而获得不同的切片浸出液。
C.测量这些溶液的花青素吸光度,得结果如下图。

请回答以下问题:
(1)上述实验操作步骤的叙述存在着一个明显的不足,没有遵循实验设计的    原则。请你对上述实验中的不准确的操作重新进行叙述:            
(2)由上图中的曲线你可以得出的结论是                    
(3)已知物质A能促进细胞膜上载体的活性。有人认为:经过不同温度的处理是影响了细胞膜上运载花青素的载体的活性。请你借助上述材料设计实验证明该观点是否正确。
材料用具:略。
实验步骤:
                                                                   
                                                                  
                                                                   
(2)预测结果及结论:
                                                                   
                                                                   

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根据所给提示,完成句子。每空一词,含缩略词。

1. Lily swims faster than the other students in her class.(改为同义句)

Lily_______  _________in her class.

2. I think her dress is beautiful. (对划线部分提问)

_______ do you _________ of her dress?

3.I went to the park last Sunday. (改为否定句)

I ________  _________ to the park last Sunday.

4. 他决定了在北京学习。(完成译句)

He _________  _________study in Beijing.

 

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A)按要求改写下列各句。每空一词(含缩略形式)。

1.Linda plays tennis with her sister. (改为一般疑问句)

Linda tennis with her sister?

2.He likes his history teacher.(改为否定句)

He his history teacher.

3.They are my good friends. ( she替换they改写句子)

She my good .

4.Alices dog is on the chair.(对划线部分提问)

Alices dog

5.We have Chinese on Wednesday afternoon. (对划线部分提问)

you have Chinese

B)根据所给的汉语意思完成句子。每空一词(含缩略形式)

6.你弟弟喜欢香蕉吗?

your brother bananas?

7.他认为棒球难。

He baseball is .

8. 他们的钥匙在哪里?

their keys?

9.英语对我来说很简单。

English is very me.

10.我们有特价销售的紫色毛衣。

We have purple sweaters .

 

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根据所给提示,完成句子。每空一词,含缩略词。

1.Chen Ping received an e-mail last Friday. (改为否定句)

Chen Ping                              an e-mail last Friday.

2.There are fifty students in our class. (对划线部分提问)

                             students are there in your class?

3.I often borrow a dictionary from Bruce. (改为同义句)

Bruce often                his dictionary                me.

4.交卷前你应仔细检查。(完成译句)

You should check your answers carefully before you                           your paper.

 

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