A：go to the park
B：going to the park
C：to go to the park
若θ是△△ABC的一个内角，且sinθcosθ=-18，则sinθ-cosθ的值为（ ）
珠江三角洲地区发展经济的优势条件不包括（ ）
根据句意和首字母提示，完成句中所缺单词①We should brush our____ (tooth) every day.②—What’s Jane doing? —She’s b____ her sister.③ What is she doing for v____ ?④—How do you come to school? —I usually ride a b____ to school.⑤ I want to s ____ an e-mail to my aunt.
世界上数一数二的艺术之都,市区横跨塞纳河两岸,建都已有800余年的历史,在这里哪怕只做短暂的逗留,感觉都会像是接受了一场艺术洗礼……这座城市是 ( )
