试题与答案

细胞通讯是细胞间或细胞内高度精确和高效地发放与接收信息的通讯机制,是一种对环境做出综

题型:填空题 案例分析题

题目:

细胞通讯是细胞间或细胞内高度精确和高效地发放与接收信息的通讯机制,是一种对环境做出综合反应的细胞行为。不同的信号分子必须与相应的受体(化学本质多为糖蛋白)特异性结合才能发挥作用。图一是雌激素(固醇类物质)与相应受体结合示意图,图二是生长素与相应受体结合示意图。请据图回答:

()酶催化mRNA的合成,作为蛋白质合成的模板。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析: 2007年黑龙江省国际互联网络用户299万户(包括拨号、专线和宽带接入用户).增长4.9%,其中宽带接入户209.2万户,增长18.8%。则国际互联网络拨号、专线用户比上年减少万户.故选B。

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题型:阅读理解

阅读理解。

     Luck and Kate are English girls. They are twins. They are studying Chinese in Beijing now. They are in Miss Gao's class. In their class, there are fifty-two students. There are twenty-eight boys and twenty-four

girls.

     Where are the twins? Look, they are sitting near the door of the classroom. Lucy is wearing a red coat. Kate is wearing a yellow sweater. They are having a Chinese class. They like Chinese.

根据短文内容判断正误。对的在括号里打(T),错的打(F)。

( )1. The two girls are twins. They are in a school of China.

( )2. Lucy is in a yellow sweater.

( )3. Now they are studying Chinese in the classroom.  

( )4. There are twenty-eight girls in their class.

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