如图，在菱形ABCD中，E为边CD上一点，连结AE并延长，交BC的延长线于点F，若CE=1，DE=2，则CF长为（　　）

Mrs. Black lives in a small village. Her husband is dead. Her son, Jack, lived with her. He worked in a shop in the village, but then he found a job in town named Green Sea. He went to live there. Mrs. Black was very angry. She got on a train and went to see her son. Then she said to him, "Jack, why do you never telephone me?"
Jack laughed, "But, mother, you haven’t got a telephone. "No." She answered, "I haven’t, but you have got one. "

下表是我国与世界上的创新型国家在某些指标上的比较：

上述材料启示我国要建设成为创新型国家必须（　　）

①加大对科技研发的投入力度            ②加大引进国外先进技术的力度

③提高自主创新能力                         ④提高科技对经济增长的贡献率

中国的和平发展，是世界和平与稳定的维护力量，而不是破坏力量；中国的发展为国际社会带来的是机遇，而不是威胁。可见，中国走和平发展道路（    ）

①符合世界和平与发展的历史潮流

②符合中国、亚洲和世界人民的共同利益

③表明综合国力是外交政策的决定因素

④体现了我国奉行独立自主的和平外交政策

照样子，写词语

黑糊糊 ____   ____   ____

一缕缕 ____   ____   ____