蛋白质生物合成的起始复合物中不包括A．蛋氨酰tRNA B．DNA C．mRNA D．

America is a mobile society. Friendships between Americans can be close and real, yet disappear soon. They don’t feel hurt. If the same two people meet again, even years later, they pick up the friendship. This can be quite difficult for us Chinese to understand .Friendships between us develop more slowly but may become lifelong feelings, extending（延伸）deeply into both families.

There is another difficult point for us to understand. Although Americans treat friends warmly in their personal everyday lives, they don’t show their politeness to them if it requires a great deal of time. But in China, we are usually generous with our time. We, as hosts, will appear at an airport even in the middle of the night to meet a friend. We may take a day off from our work to act as guides to our friends. It is opposite in America. Americans cannot manage the time to do a great deal with a visitor outside their daily plans. They will probably expect the visitors to get themselves from the airport to the hotels. And they expect the visitors will phone them from there. Once the visitors arrive at their homes, the welcome will be full, warm and real.

For Americans, it is often considered more friendly to invite a friend to their homes than to restaurants, except for business matters. Americans are ready to receive us foreigners at their homes, share their holidays, and their home life. So accept their hospitality（好客）at home and enjoy your visit in America!

小题1: The underlined phrase "pick up" in Paragraph 1may mean "_________________".

A．put down

B．give up

C．pay no attention to

D．continue小题2: From the passage, we can know_________________.

A．Americans are always generous with their time.

B．Americans don’t feel hurt if their friendships disappear soon.

C．Chinese friendships develop more slowly but will never disappear.

D．Chinese friendships develop faster than American friendships.小题3:This passage is most probably written for __________________.

A．American students

B．Chinese students

C．Chinese visitors to America

D．American visitors to China

保育员配合室外教育活动，每周伊始，要了解本周室外活动的（），（）安排及活动（），做好室外活动前的（）检查和材料准备工作。

在我国财政收入中，国有资产收益的具体形式包括______。

A．税收

B．股息

C．规费

D．资金使用费

E．红利

智力是个体从事心智活动的要素，包括( )。

A．记忆力

B．推理能力

C．社交技能

D．关系处理能力

E．空间感觉能力

请柬的特点是书面性较强，使用广泛，内容一般情况下是不公开的。