题目

阅读短文，从各题所给的三个答案中选择最佳答案回答问题或完成句子。Last summer Jenny and her friends had a bus trip to New York. She felt very relaxed on the way. They visited a museum. But it’s really crowded (拥挤)there and the display(展览) was not interesting at all. They went to different restaurants to have dinner. Some food was quite delicious, but Jenny thought the fast food was terrible. When the weather was fine, they went to the beach to swim. The sea was beautiful and they had a good time.【1】Jenny had a bus trip to _____.A. China B. the USA C.下列各图表示植物的一些繁殖方式，请据图回答下列问题．（1）A、B、C所表示的繁殖方法分别是________、________、________，它们都属于________（填“有性”或“无性”）生殖，这种生殖方式产生的后代都只具有________的遗传特性．（2）图C中①指的是________，②指的是________，利用这种繁殖方法时，确保植物成活的关键是保证①和②的________紧密结合．