题目

下列特征能表明H7N9禽流感病毒属于生物的是（ ） A . 能够运动 B . 具有细胞结构 C . 能在动物体内繁殖 D . 能使人体患病 答案：CAmerica 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* 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 needs 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 days off from our work to act as guides to our friends. It is opposite in America ,Americans can not 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* at home and enjoy your visit in America!1.The writer of this passage must be ______.A．an AmericanB．a ChineseC．a professorD．a student2.Which of the following statements is TRUE according to the passage?A．Friendships between Americans usually extend deeply into their families.B．Friendships between Americans usually last for all their lives.C．Americans always show their warmth even if they are very busy.D．Americans will continue their friendships again even after a long break.3.From the last two paragraphs we can learn that when we arrive in America to visit an American friend, we will probably be ______.A．warmly welcomed at the airportB．offered a ride to his homeC．treated hospitably at his homeD．treated to dinner in a restaurant4.The underlined words “generous with our time” in Paragraph 3 probably mean ______.A．strict with timeB．serious with timeC．careful with timeD．willing to spend time5.A suitable title for this passage would probably be “______”.A．Friendships between ChineseB．Friendships between AmericansC．Americans’ hospitalityD．Americans’ and Chinese’s views of friendships