根据句意和所给首字母，在句子空白处填入适当的单词。 1. We give our

单词拼写。

1. Do you have any difficulty ________ (解决) the problem?

2. "________ (注意), please. Flight No. 2903 has arrived."

3. Thank you for giving us so many good ________ (建议).

4. We all wish that the Asian Games (亚运会) would be held ________ (成功地) in Guangzhou.

5. Millie had no ________ (选择) but to wait for the next train yesterday morning.

6. You shouldn't leave a child ________ (单独) in the house.

7. It is said that twins have ________ (相似的) characteristics.

8. The more vegetables you eat, the ________ (健康) you will be.

9. —I am not sure which tie to wear for the party. —God! I have no idea, ________ (也).

10. He seems very serious, but in fact he has a good sense of ________ (幽默).

将大肠杆菌培养在以甘油为惟一碳源的低限培养基中，lac操纵子表达吗加入乳糖之后呢除了乳糖，还加葡萄糖吗？为什么？

革兰染色的结果判断，革兰阴性菌染成什么颜色？（）

A.菌体染成红色

B.菌体染成紫色

C.菌体染成蓝色

D.菌体染成黄色

E.菌体染成白色

比较同一组成的单晶、多晶、非晶态无机材料的热导率随温度的变化是什么？

某钢筋混凝土框架结构多层办公楼采用隐框玻璃幕墙，每层层高4.1m。为了减少幕墙立柱的截面，除以每层钢筋混凝土框架粱侧的预埋件作为支承点外，还在每层加汽混凝土轻质墙增加了一个支承点，且在连接部位的主体结构上增设钢结构梁。隐框玻璃幕墙玻璃板块制作后，对其进行抽样剥离试验后运到现场进行安装。

在幕墙的构造中，楼面和吊顶与幕墙的（）是一个非常重要的问题，此处经常留有缝隙造成室内上下空间保温和隔声出现问题。

A．连接

B．黏结

C．隔墙

D．分格处理